Reeks 2 — Wetenskap & WerklikheidSeries 2 — Science & Reality

Sessie 7 — Naturalisme se SelfvernietigingSession 7 — The Self-Destruction of Naturalism

— deurby Attie Retief

Naturalisme se Selfvernietiging

Inleiding

Ons het ‘n lang pad saam gestap in hierdie reeks. Sessie 1 het die onderskeid tussen wetenskap en scientisme uitgewerk. Sessie 2 het ontdek dat die Christelike geloof juis die grond was waaruit die wetenskap gegroei het. Sessie 3 het ‘n heelal met ‘n begin opgelewer, ‘n begin wat na ‘n Oorsaak roep. Sessie 4 het ons voor ‘n werklikheid gestel wat soos ontwerp lyk, ongeag hoe hard ons probeer om dit weg te verklaar. Sessie 5 het gewys dat die werklike konflik nie tussen evolusie en geloof is nie, maar tussen wetenskap en die metafisiese toevoeging dat alles “ongeleid” en “doelloos” is. En Sessie 6 het ons gekonfronteer met iets wat die materialistiese wêreldbeeld nie kan verklaar nie: die innerlike wêreld van ervaring, die feit dat daar “iets is wat dit is om” jy te wees.

‘n Patroon het deur al hierdie sessies begin deurskemer. By elke draaipunt staan die naturalistiese wêreldbeeld voor ‘n muur. En elke keer klim dit oor daardie muur deur gereedskap te leen wat nie aan hom behoort nie: rasionaliteit, orde, doel, waarheid. Dit is asof iemand hardnekkig ontken dat daar so iets soos elektrisiteit is, maar elke aand die lig aanskakel.

Hierdie sessie maak daardie patroon eksplisiet. Streng naturalisme, die siening dat die natuur al is wat bestaan, is nie net onvolledig nie. Dit is selfvernietigend. Dit kan nie eens die gereedskap verantwoord wat dit gebruik om sy eie saak te maak nie: rede, waarheid, en die wetenskap self. En hierdie probleem is nie ‘n uitvinding van Christelike apologete nie. Sommige van die skerpste kritiek kom van ateistiese filosowe self.

Metodologiese vs. Metafisiese Naturalisme

Die onderskeid wat alles verander

Die verskil tussen twee soorte naturalisme gaan dikwels in populêre debatte verlore, met ernstige gevolge vir helderheid van denke.

Metodologiese naturalisme is die werkwyse wat wetenskaplikes volg wanneer hulle navorsing doen. Wanneer ‘n chemikus ‘n reaksie ondersoek, soek sy na chemiese oorsake. Wanneer ‘n fisikus deeltjiebotsings ontleed, soek hy na fisiese meganismes. Wanneer ‘n bioloog die verspreiding van ‘n siekte bestudeer, soek sy na biologiese en omgewingsfaktore. Niemand verwag dat ‘n wetenskaplike in die laboratorium sê: “Ons kan nie verklaar hoekom die reaksie so plaasgevind het nie, dit was seker ‘n engel” nie.

Dit is presies soos dit moet wees. Dink aan ‘n loodgieter wat geroep word om ‘n lek reg te maak. Wanneer hy onder die wasbak inkruip, soek hy na fisiese oorsake: ‘n gebarste pyp, ‘n los verbinding, ‘n verweerde seel. Dit sou absurd wees as hy sy gereedskap neerlê en sê: “Ek dink dis bonatuurlik.” Dat hy na fisiese oorsake soek, beteken nie dat hy ontken dat God bestaan nie. Dit beteken bloot dat hy die regte gereedskap vir die regte taak gebruik. Die loodgieter se metode veronderstel fisiese oorsake. Dit sê niks oor die uiteindelike werklikheid nie.

So ook met die wetenskap. Metodologiese naturalisme is ‘n werkbeginsel. Dit sê: “Binne die raamwerk van wetenskaplike ondersoek soek ons na natuurlike oorsake en meganismes.” Dit is nuttig, vrugbaar, en geen teoloog of filosoof behoort hierteen beswaar te hê nie.

Metafisiese naturalisme is iets geheel anders. Dit is nie ‘n metode nie, dit is ‘n wêreldbeeld. Die filosofiese bewering dat die natuur werklik al is wat bestaan. Geen God. Geen siel. Geen transendente werklikheid. Geen doel of betekenis ingebou in die heelal. Alles wat bestaan, is materie, energie, en die wette wat dit beheer.

Merk op: hierdie is nie ‘n wetenskaplike bevinding nie. Geen eksperiment het ooit aangetoon dat God nie bestaan nie. Geen laboratoriumtoets kan die afwesigheid van ‘n transendente werklikheid bewys nie. Metafisiese naturalisme is ‘n filosofiese posisie, ‘n geloofsoortuiging as jy wil, wat die wetenskap binnegekom het as vermomde filosofie. Dit is ‘n voorveronderstelling wat mense na die wetenskap bring, nie ‘n gevolgtrekking wat hulle uit die wetenskap put nie.

Die goëltoertjie

Hier lê die groot goëltoertjie van ons tyd. Baie populêre wetenskapskrywers en -kommunikeerders gly van die een na die ander asof dit dieselfde ding is. Die argument verloop gewoonlik so:

Stap 1: “Die wetenskap werk deur na natuurlike oorsake te soek.” (Korrek. Dit is metodologiese naturalisme.)

Stap 2: “Die wetenskap het groot sukses behaal met hierdie benadering.” (Korrek, niemand ontken dit.)

Stap 3: “Dus bestaan daar slegs natuurlike oorsake.” (Wag. Hoe het ons hier gekom?)

Die sprong van Stap 2 na Stap 3 is ‘n logiese dwaaling. Dit is soos om te sê: “My visnet vang net vis; dus bestaan daar niks anders as vis in die see nie.” Dat jou metode ontwerp is om sekere dinge te vind, beteken nie dat slegs daardie dinge bestaan nie. Die wetenskap is ontwerp om natuurlike meganismes te ondersoek. Dat dit nie God of morele waardes in ‘n proefbuis vind nie, sê net soveel oor die beperkings van die metode as oor die werklikheid.

Die Britse filosoof Mary Midgley het hierdie punt met kenmerkende helderheid gemaak: om te sê dat die wetenskap bewys het dat daar niks buite die natuur bestaan nie, is soos om te sê dat ‘n teleskoop bewys het dat musiek nie bestaan nie, omdat jy dit nie deur die teleskoop kan sien nie. Die instrument is nie ontwerp om dit waar te neem nie. Dit maak die instrument nie nutteloos nie. Dit maak bloot die bewering absurd.

Hoekom hierdie onderskeid saak maak

Hierdie onderskeid is nie akademiese haarklowery nie. Dit het praktiese gevolge.

Wanneer iemand sê: “Die wetenskap het bewys dat daar geen God is nie,” gebruik hulle die gesag van metodologiese naturalisme (wat werklik indrukwekkende resultate gelewer het) om metafisiese naturalisme (wat ‘n onbewysbare filosofiese posisie is) geloofwaardig te maak. Dit is intellektueel oneerlik, al is dit dikwels onbewustelik.

Wanneer ‘n professor vir studente sê: “In hierdie klas volg ons die wetenskap, nie die Bybel nie,” impliseer hy dikwels dat die wetenskap en die Bybel noodwendig bots. Maar die wetenskap as metode bots met niks. Dit is ‘n instrument, soos ‘n mikroskoop. Wat bots, is metafisiese naturalisme, die filosofiese oortuiging dat die natuur al is wat bestaan, met die Christelike geloof. En daardie botsing is nie ‘n stryd tussen wetenskap en geloof nie. Dit is ‘n stryd tussen twee filosofieë, twee wêreldbeelde.

Die oomblik wat ons hierdie onderskeid helder sien, val baie van die kulturele druk op gelowiges weg. Jy hoef nie te kies tussen wetenskap en geloof nie. Jy moet kies tussen metafisiese naturalisme en teisme, en dit is ‘n filosofiese keuse, nie ‘n wetenskaplike een nie. Soos ons nou sal sien, is dit ‘n keuse waarin die naturalisme ernstige probleme het. Probleme wat dit uiteindelik selfvernietigend maak.

C.S. Lewis se Argument uit die Rede

Die kern van die argument

In 1947 publiseer C.S. Lewis ‘n boek getiteld Miracles. Die hoofstuk wat vir ons doel die belangrikste is, is Hoofstuk 3: “The Cardinal Difficulty of Naturalism.” Lewis formuleer hier ‘n argument wat eenvoudig klink, maar verwoestend is vir die naturalistiese posisie.

Die argument loop so:

Premisse 1: As naturalisme waar is, is elke gedagte in ons koppe die resultaat van voorafgaande fisiese oorsake: breinchemie, neuronale impulse, elektriese seine. Geen uitsondering. Elke oortuiging, elke redenasie, elke gevolgtrekking is uiteindelik niks meer as die uitkoms van ‘n ketting van fisiese gebeure wat volgens die wette van die fisika verloop nie.

Premisse 2: Maar as ons gedagtes geheel en al bepaal word deur nie-rasionele fisiese oorsake, as daar geen plek is vir iets soos insig, begrip, of rasionele gronde nie, dan het ons geen rede om te vertrou dat ons gedagtes rasioneel is nie. ‘n Gedagte wat geheel en al veroorsaak word deur breinchemie is nie meer of minder “waar” as ‘n ander gedagte wat geheel en al deur breinchemie veroorsaak word nie. Net soos ‘n steen wat van ‘n krans af val nie meer of minder “waar” is as ‘n steen wat in ‘n rivier lê nie. Albei is bloot die resultaat van fisiese oorsake.

Gevolgtrekking: Maar hierdie ondermyning geld ook vir die gedagte “naturalisme is waar.” As naturalisme waar is, dan is die geloof in naturalisme self niks meer as die resultaat van breinchemie nie, en ons het geen rede om dit as rasioneel gefundeerd te aanvaar nie. ‘n Wêreldbeeld wat die geldigheid van alle redenasie ondermyn, ondermyn ook homself.

Lewis stel dit met ‘n onvergeetlike beeld: dit is asof iemand beweer dat alle gedagtes net die klanke is wat ‘n masjien maak, en dan verwag dat jy hierdie bewering as ‘n ware gedagte moet aanvaar, nie net as ‘n masjienklank nie.

Of, in Lewis se eie woorde:

“If the whole universe has no meaning, we should never have found out that it has no meaning: just as, if there were no light in the universe and therefore no creatures with eyes, we should never know it was dark. Dark would be without meaning.”

As die heelal werklik sonder betekenis is, sou ons dit nooit kon ontdek nie. Want die ontdekking self veronderstel die vermoë om tussen betekenis en betekenisloosheid te onderskei, ‘n vermoë wat op ‘n betekenislose heelal onverklaarbaar is.

Die logika agter die argument

Die kern van die saak is die verskil tussen oorsake en gronde.

‘n Oorsaak is ‘n fisiese gebeure wat ‘n ander fisiese gebeure voortbring. Die bal tref die ruit; die ruit breek. Die neuron vuur; die spier trek saam. Dit is die taal van die fisika, van oorsaak en gevolg.

‘n Grond is ‘n rasionele verband wat ‘n gevolgtrekking regverdig. Die premisses van ‘n argument lei tot ‘n konklusie. Ons sien in dat as alle mense sterflik is, en Sokrates ‘n mens is, Sokrates sterflik is. Hierdie “insien” is nie ‘n fisiese gebeure soos ‘n bal wat ‘n ruit tref nie. Dit is ‘n daad van rasionele begrip.

Die vraag is: kan ‘n wêreld wat uitsluitlik uit oorsake bestaan, ook gronde akkommodeer? As elke gedagte 100% verklaar word deur die voorafgaande fisiese toestande van die brein, is daar dan enige plek vir rasionele gronde om ‘n rol te speel?

Lewis se antwoord is: nee. As jy die denke geheel en al terugvoer na fisiese oorsake, dan het jy die rasionele gronde uit die prentjie verwyder. En as jy die rasionele gronde verwyder het, dan het jy geen basis meer om enige gedagte as “waar” of “rasioneel gefundeerd” te beskou nie. Jy het bloot ‘n ketting van fisiese gebeure wat nie “waar” of “onwaar” is nie, net soos die pad van ‘n rivierloop nie “waar” of “onwaar” is nie.

Dit beteken nie dat breinchemie irrelevant is vir denke nie. Ons denke is liggaamlik beliggaam, en ons breine is wonderlike instrumente. Maar rasionaliteit kan nie gereduseer word tot chemie nie. Om te sê dat ‘n argument geldig is, is om iets te sê wat meer is as om die chemiese samestelling van die neurone te beskryf wat dit voortbring. As jy daardie “meer” ontken, ontken jy rasionaliteit self, en dan het jy geen basis meer om enigiets te beweer nie.

Die Anscombe-debat

In 1948, ‘n jaar na die publikasie van Miracles, het die Oxford-filosoof Elizabeth Anscombe Lewis se argument in ‘n openbare debat by die Socratic Club uitgedaag. Hierdie debat is dikwels, en onakkuraat, voorgestel as ‘n verpletterende nederlaag vir Lewis wat hom genoop het om sy argument te laat vaar.

Die werklike geskiedenis is genuanseerder en interessanter.

Anscombe se kritiek was nie dat Lewis se basiese insig verkeerd was nie. Haar besware was tegnies: sy het aangevoer dat Lewis nie sorgvuldig genoeg onderskei het tussen verskillende soorte “oorsaaklikheid” nie, en dat sy konsep van ‘n “irrasionele oorsaak” onvoldoende gedefinieer was. Lewis het in die oorspronklike weergawe gesê dat as ‘n gedagte geheel en al deur “irrasionele” oorsake veroorsaak word, dit nie rasioneel kan wees nie. Anscombe het uitgewys dat die woord “oorsaak” hier dubbelsinnig is: daar is ‘n verskil tussen volledige fisiese oorsake en die soort rasionele gronde wat ‘n gevolgtrekking onderlê, en Lewis moes hierdie onderskeid skerper maak.

Lewis het die kritiek ernstig opgeneem. In die hersiene uitgawe van Miracles (1960) het hy Hoofstuk 3 wesenlik herskryf. Hy het sy argument verfyn, nie prysgegee nie. Die nuwe weergawe maak die onderskeid tussen oorsake en gronde veel duideliker en is filosofies sterker as die oorspronklike.

Wat veral opmerklik is: Anscombe self het later erken dat sy nie Lewis se grondliggende punt betwis het nie, naamlik dat naturalisme ‘n probleem het met die verantwoording van rasionaliteit. Haar beswaar was teen die formulering, nie teen die insig nie. En Lewis se hersiene argument het hierdie formuleringsfoute reggestel.

Die les hieruit is dubbel. Lewis was eerlik genoeg om kritiek te ontvang en sy werk te verbeter, ‘n voorbeeld wat ons almal kan navolg. En die mite dat Anscombe Lewis se argument “vernietig” het, is self ‘n voorbeeld van hoe ‘n ingewikkelde geskiedenis tot ‘n eenvoudige, onakkurate narratief vereenvoudig word.

Die blywende krag van Lewis se insig

Lewis se argument bly relevant omdat dit ‘n probleem identifiseer wat diep in die hart van die naturalistiese posisie lê. Dit is nie ‘n argument oor spesifieke wetenskaplike bevindinge nie, maar oor die voorwaardes vir rasionaliteit self. En dit het nie van Lewis se spesifieke formulering afgehang nie. Alvin Plantinga het dit in die laat twintigste eeu in ‘n nuwe, meer tegniese gedaante laat herleef.

Plantinga se Evolusionêre Argument Teen Naturalisme (EAAN)

Die agtergrond

Alvin Plantinga is een van die mees invloedryke filosowe van die twintigste en een-en-twintigste eeu. As Gereformeerde denker het hy vanaf die 1960’s tot vandag ‘n groot bydrae gelewer tot die filosofie van die godsdiens en die epistemologie (kennisleer). Hy is die ontvanger van die Templeton-prys en het wyd erkenning ontvang, selfs van kollegas wat sy gevolgtrekkings nie deel nie.

In sy boek Warrant and Proper Function (1993), en later in Where the Conflict Really Lies (2011), ontwikkel Plantinga ‘n argument wat Lewis se basiese insig in ‘n streng filosofiese raamwerk plaas. Hy noem dit die Evolutionary Argument Against Naturalism, die Evolusionêre Argument Teen Naturalisme.

Die argument is nie teen evolusie nie. Plantinga het geen beswaar teen die biologiese teorie van evolusie as sodanig nie. Sy argument is teen die kombinasie van evolusie en naturalisme: die bewering dat evolusie ‘n geheel onbegeleide, doellose proses is wat plaasvind in ‘n heelal sonder God en sonder doel.

Die argument stap vir stap

Stap 1: Die vraag. As naturalisme en evolusie albei waar is, as ons kognitiewe vermoëns die produk is van ‘n geheel onbegeleide evolusionêre proses in ‘n godlose heelal, watter rede het ons dan om te vertrou dat hierdie vermoëns betroubaar is? Dat hulle ons na die waarheid lei?

Stap 2: Wat selekteer natuurlike seleksie? Natuurlike seleksie selekteer vir oorlewing en voortplanting, nie vir ware oortuigings nie. ‘n Organisme wat oorleef en voortplant, word deur natuurlike seleksie bevoordeel, ongeag of sy oortuigings waar of onwaar is. Die enigste ding wat tel, in streng evolusionêre terme, is gedrag wat oorlewing bevorder.

Stap 3: Die koppeling tussen oortuigings en gedrag. Hier word dit interessant. Vir oortuigings om evolusionêr geselekteer te word, moet hulle ‘n impak hê op gedrag. Maar dieselfde gedrag kan voortgebring word deur radikaal verskillende oortuigings. Dit is die sleutelpunt.

Plantinga gee ‘n beroemde (en opsetlik humoristiese) voorbeeld: stel jou voor ‘n prehistoriese mens, Paul, wat ‘n tier teëkom. Paul hardloop weg, gedrag wat oorlewing bevorder. Maar hoekom het Paul gehardloop? Hier is ‘n paar moontlikhede:

• Paul glo dat tiers gevaarlik is en wil wegkom. (Ware oortuiging, gepaste gedrag.)
• Paul glo dat die tier ‘n vriendelike kat is en wil hom gaan aai, maar hy wil eers oefen deur ‘n bietjie hard te hardloop. (Onware oortuiging, maar dieselfde gedrag.)
• Paul glo dat hy in ‘n wedloop is en wil wen. (Onware oortuiging, maar dieselfde gedrag.)
• Paul wil die tier vang vir ‘n troeteldier en dink dat hardloop die beste manier is om ‘n tier te lok. (Onware oortuiging, maar dieselfde gedrag.)

In elkeen van hierdie gevalle oorleef Paul. Natuurlike seleksie kan nie onderskei watter oortuigings waar is nie. Dit kan net “sien” watter gedrag oorlewing bevorder. Die verband tussen ware oortuigings en oorlewingsgedrag is veel losser as wat ons intuïtief dink.

Stap 4: Die waarskynlikheid. Plantinga formuleer dit formeel: laat R die betroubaarheid van ons kognitiewe vermoëns wees, N naturalisme, en E (onbegeleide) evolusie. Die vraag is dan: wat is P(R

N&E), die waarskynlikheid dat ons kognitiewe vermoëns betroubaar is, gegee dat naturalisme en onbegeleide evolusie waar is?

Plantinga argumenteer dat hierdie waarskynlikheid laag is, of op sy beste onkenbaar. As natuurlike seleksie net op gedrag selekteer en nie op die waarheid van oortuigings nie, dan het ons geen rede om te verwag dat ons breine, wat gevorm is deur hierdie proses, betroubare instrumente vir die ontdekking van waarheid sal wees nie. Hulle is instrumente vir oorlewing, en oorlewing en waarheid is nie dieselfde ding nie.

Stap 5: Die selfondermyning. Maar as ons nie kan vertrou dat ons kognitiewe vermoëns betroubaar is nie, dan kan ons nie enige van ons oortuigings vertrou nie, insluitend ons oortuiging dat naturalisme en evolusie waar is. Die posisie ondermyn homself. Jy staan op ‘n leer en saag die leer onder jou uit. Jy val saam met die leer.

Naturalisme + onbegeleide evolusie genereer ‘n rede om naturalisme + onbegeleide evolusie te wantrou. ‘n Selfvernietigende posisie.

Hoekom dit nie ‘n argument teen evolusie is nie

Wat sê Plantinga nie? Hy sê nie dat evolusie onwaar is nie. Hy sê nie dat natuurlike seleksie nie ‘n werklike meganisme is nie. Hy sê nie dat gelowiges evolusie moet verwerp nie.

Wat hy sê, is dat die kombinasie van evolusie en naturalisme selfvernietigend is. Neem die naturalisme weg, en die probleem verdwyn. As God die evolusionêre proses gelei het, as die proses nie blind en doelloos was nie maar deur ‘n rasionele Skepper gerig is om wesens voort te bring wat die werklikheid kan ken, dan is daar geen probleem met die betroubaarheid van ons kognitiewe vermoëns nie. God het ons so gemaak dat ons kan dink, redeneer, die waarheid ontdek.

Teistiese evolusie het hierdie probleem nie. Die probleem is uniek aan die kombinasie van evolusie met die aanname dat daar geen God is nie en geen doel nie. Dit is naturalisme wat die probleem skep, nie evolusie nie.

Besware en antwoorde

Plantinga se argument het wyd aandag en kritiek ontvang. ‘n Paar van die belangrikste besware verdien eerlike aandag.

Beswaar 1: Inhoudseksternalisme. Sommige filosowe argumenteer dat die inhoud van ons oortuigings nie onafhanklik is van die wêreld nie, dat oortuigings hulle inhoud gedeeltelik van die dinge in die wêreld kry waaroor hulle gaan. As Paul glo dat ‘n tier gevaarlik is, dan gaan sy oortuiging oor die werklike tier, en die feit dat dit oor ‘n werklike ding gaan, verseker ‘n sekere mate van betroubaarheid.

Plantinga se antwoord: selfs as inhoudseksternalisme korrek is, verklaar dit nie die betroubaarheid van ons abstrakte redenasie nie. Ons vermoë om wiskundige teorieë te bewys of die grondslae van die fisika te ontdek gaan ver verby wat vir oorlewing nodig is, en inhoudseksternalisme kan nie verklaar hoekom ons breine betroubaar is op hierdie vlak nie.

Beswaar 2: Betroubaarheidsteorie (reliabilism). Ander filosowe sê dat ons kognitiewe prosesse betroubaar is as hulle feitlik, as ‘n statistiese feit, oorwegend ware oortuigings produseer, ongeag die meganisme waardeur hulle ontstaan het.

Plantinga se antwoord: dit mis die punt. Die vraag is nie of ons kognitiewe vermoëns feitlik betroubaar is nie (dit gaan hy nie ontken nie), maar of ons, gegee naturalisme en onbegeleide evolusie, enige rede het om te verwag dat hulle betroubaar sal wees. Die reliabilis neem betroubaarheid as ‘n feit aan; Plantinga vra of dit ‘n verwagte uitkoms is op naturalistiese gronde. En sy antwoord is: nee.

Beswaar 3: Oorlewing vereis waarheid. Die mees intuïtiewe beswaar is dat ware oortuigings beter is vir oorlewing as onware oortuigings. ‘n Dier wat ‘n akkurate beeld van sy omgewing het, sal beter oorleef as een met ‘n onakkurate beeld.

Plantinga erken dat daar ‘n verband is, maar argumenteer dat dit nie sterk genoeg is nie. Vir baie van ons belangrikste oortuigings, oor die aard van die werklikheid, oor wiskundige waarhede, oor die grondslae van die logika, is die verband met oorlewing uiters vaag. ‘n Holbewoner het geen oorlewingsvoordeel daarby om te weet dat die aarde om die son draai, of dat daar ‘n oneindige aantal priemgetalle is nie. Dat ons breine hierdie soort waarhede kan ontdek, waarhede sonder oorlewingswaarde, is op naturalistiese gronde ‘n raaisel.

Patricia Churchland, ‘n prominente naturalistiese filosoof, het hierdie punt opvallend eerlik gemaak: “Boiling down enormous complexities to their extreme, the principal chore of nervous systems is to get the body parts where they should be in order that the organism may survive. … Improvements in sensorimotor control confer an evolutionary advantage: a fancier style of representing is advantageous so long as it is geared to the organism’s way of life and enhances the organism’s chances of survival. Truth, whatever that is, definitely takes the hindmost.” Evolusie gee om oor oorlewing, nie oor waarheid nie. Churchland sê dit as naturalis, en sy verstaan skynbaar nie dat sy daarmee die mat onder haar eie posisie uittrek nie.

Die krag van die argument

Die krag van Plantinga se EAAN lê daarin dat dit die naturalis in ‘n onontkombare dilemma plaas:

• As jy aanvaar dat P(R

  N&E) laag is, dan moet jy toegee dat jy geen rede het om jou eie oortuigings te vertrou nie, insluitend jou oortuiging in naturalisme.

• As jy aanvaar dat P(R

  N&E) hoog is, moet jy verklaar hoekom, en op streng naturalistiese gronde is dit uiters moeilik om te doen.

• As jy sê dat P(R

  N&E) onkenbaar is, dan het jy steeds geen rede om jou kognitiewe vermoëns te vertrou nie, en weer ondermyn jy jou eie posisie.

In elke geval is die naturalis in die moeilikheid. Die argument is nie ‘n empiriese bewering oor die brein nie. Dit is ‘n epistemologiese probleem oor die gronde vir vertroue in ons rasionele vermoëns. En dit is ‘n probleem wat die naturalis nie kan oplos sonder om die naturalisme te verlaat nie.

Thomas Nagel se Bekentenis

‘n Ateïs teen die materialisme

In 2012 het een van die mees gerespekteerde filosowe in die Engelssprekende wêreld ‘n klein boek gepubliseer wat ‘n storm ontketen het. Die boek was Mind and Cosmos: Why the Materialist Neo-Darwinian Conception of Nature Is Almost Certainly False. Die outeur was Thomas Nagel, professor in filosofie en reg aan New York University.

Die reaksie was heftig. Nagel is nie ‘n Christen nie. Hy is nie ‘n teïs nie. Hy beskryf homself as ‘n ateïs. En tog het hy die moed gehad om openlik te verklaar dat die heersende materialistiese wêreldbeeld, die idee dat alles uiteindelik verklaar kan word deur fisika, chemie, en onbegeleide evolusie, “amper seker onwaar” is.

Die boek is deur sommige akademici begroet as ‘n noodsaaklike korrektief; deur ander is dit veroordeel asof Nagel verraad gepleeg het. Steven Pinker het dit op Twitter (soos dit toe nog genoem is) afgewys; Daniel Dennett het dit “an act of intellectual suicide” genoem. Die felheid van die reaksie is self veelseggend. Dit wys hoe diep die lojaliteit aan die materialistiese wêreldbeeld in sekere akademiese kringe loop, en hoe bedreigend dit voel wanneer een van jou eie mense die ortodoksie bevraagteken.

Nagel se argument

Nagel se argument is nie een-dimensioneel nie. Hy identifiseer drie terreine waarop die materialistiese wêreldbeeld faal:

1. Bewussyn. Die “harde probleem van bewussyn” (wat ons in Sessie 6 bespreek het) is volgens Nagel nie ‘n tydelike leemte in ons kennis nie, maar ‘n aanduiding dat die materialistiese raamwerk grondig ontoereikend is. Dat daar ‘n subjektiewe, innerlike wêreld van ervaring bestaan, dat daar “iets is wat dit is om” ‘n vlermuis of ‘n mens te wees (soos hy dit in sy beroemde 1974-artikel “What Is It Like to Be a Bat?” gestel het), kan nie verklaar word deur enige beskrywing van fisiese prosesse nie, maak nie saak hoe gedetailleerd nie.

2. Rede. Die vermoë om te redeneer, om logiese verbande in te sien en geldige argumente van ongeldige te onderskei, is nie verklaarbaar as bloot ‘n produk van natuurlike seleksie nie. Rasionaliteit veronderstel ‘n normatiewe dimensie (die verskil tussen reg en verkeerd in die denke) wat nie uit die fisika afgelei kan word nie. Hier sluit Nagel aan by Lewis en Plantinga, alhoewel hy vanuit ‘n totaal ander tradisie werk.

3. Morele waarde. Dat sommige dinge werklik goed en ander werklik sleg is, nie net “goed vir oorlewing” of “sleg vir voortplanting” nie, maar intrinsiek goed of sleg, is op materialistiese gronde onverklaarbaar. Die materialisme kan beskryf wat mense doen en wat hulle voel, maar dit kan nie verklaar dat sommige dinge werklik reg en ander werklik verkeerd is nie.

Nagel se gevolgtrekking is treffend:

“The intelligibility of the world is no accident.”

Die feit dat die heelal verstaanbaar is, dat menslike verstand die wette van die fisika kan ontdek en die struktuur van die werklikheid kan begryp, is nie ‘n toevalligheid nie. Dit vra om ‘n verklaring. En die materialistiese wêreldbeeld het nie een nie.

Nagel stel voor dat daar ‘n “natuurlike teleologie” in die werklikheid ingebou is, ‘n inherente gerigtheid op bewussyn en rede en waarde. Die heelal is nie ‘n doellose, blinde proses nie; dit is, op ‘n diep vlak, gerig op die voortbrenging van bewuste, rasionele, moreel-bewuste wesens.

Wat Nagel nie sê nie

Nagel gaan nie na die teïsme nie. Hy is openlik daaroor: hy het ‘n “kosmies-skugter” houding teenoor God (“a cosmic authority problem,” soos hy dit self noem in The Last Word). Hy wil nie hê dat God bestaan nie, en hy erken dat hierdie wil sy filosofie beïnvloed. Hierdie eerlikheid is verfrissend en seldsaam.

Maar juis omdat Nagel nie ‘n teïs is nie, is sy kritiek van die materialisme des te kragtiger. Dit kan nie afgewys word as “godsdienstige propaganda” nie, of as die werk van iemand met ‘n vooraf bepaalde teologiese agenda nie. Dit is die kritiek van iemand wat binne die sekulêre akademiese wêreld staan en sê: “Die keiser het geen klere nie.”

Nagel se werk toon dat die probleme met die materialisme nie net Christelike besorgdhede is nie. Dit is filosofiese besorgdhede wat enige eerlike denker, gelowig of nie, moet konfronteer. Dat ‘n ateïs soos Nagel dieselfde probleme identifiseer as Lewis en Plantinga, versterk die argument eerder as wat dit dit verswak. Die waarheid is nie ‘n Christelike monopolie nie. Dit is universeel, en enige eerlike soeke na waarheid sal uiteindelik by dieselfde vrae uitkom.

Die Selfreferensiële Probleem

Stellings wat hulself ondermyn

Tot dusver was die bespreking redelik abstrak. Kom ons maak dit konkreet. Daar is ‘n hele reeks stellings wat die naturalistiese wêreldbeeld genereer, maar wat hulself ondermyn sodra jy hulle noukeurig ondersoek. Elkeen is ‘n voorbeeld van wat filosowe ‘n performatiewe teenspraak noem: ‘n bewering wat, deur die blote feit dat dit gemaak word, bewys dat dit nie waar kan wees nie.

“Daar is geen waarheid nie.”

Hierdie stelling is miskien die eenvoudigste voorbeeld. As dit waar is dat daar geen waarheid is nie, dan is die stelling “daar is geen waarheid nie” self nie waar nie, en dan hoef ons dit nie te aanvaar nie. As dit onwaar is, dan is daar wel waarheid, en dan is die stelling verkeerd.

In albei gevalle val die stelling plat. Dit is ‘n logiese slangkuil: dit kan nie eens in beginsel waar wees nie, want die poging om dit te beweer, veronderstel die waarheid daarvan, wat die inhoud daarvan weerspreek.

‘n Meer gesofistikeerde weergawe hiervan is die postmoderne bewering dat “alle waarheid is relatief” of “alle waarheid is sosiaal gekonstrueer.” Maar is daardie bewering relatief? Is dit sosiaal gekonstrueer? As ja, dan het dit geen universele geldigheid nie en hoef ons dit nie te aanvaar nie. As nee, as dit ‘n objektiewe waarheid is dat alle waarheid relatief is, dan is dit self ‘n teenvoorbeeld van sy eie stelling.

“Die wetenskap is die enigste weg na kennis.”

Hierdie bewering, die kern van scientisme, het ons reeds in Sessie 1 bespreek. Maar dit verdien herhaling.

Die vraag is eenvoudig: het die wetenskap vir jou gesê dat die wetenskap die enigste weg na kennis is? Is hierdie stelling self ‘n wetenskaplike bevinding? Is dit die uitkoms van ‘n eksperiment, ‘n waarneming, ‘n meting?

Die antwoord is duidelik nee. Geen eksperiment kan bewys dat slegs eksperimente kennis lewer nie. Geen waarneming kan vasstel dat slegs waarnemings kennis bied nie. Die bewering dat die wetenskap die enigste weg na kennis is, is self ‘n filosofiese bewering, en dit word dus deur sy eie maatstaf uitgesluit. As slegs die wetenskap kennis kan lewer, en hierdie bewering nie wetenskaplik is nie, dan kan ons dit nie weet nie.

Scientisme sny die tak af waarop dit sit.

“Alle oortuigings is die produk van evolusie vir oorlewing, nie vir waarheid nie.”

Hierdie is ‘n variasie op Plantinga se argument, maar dan in die volksmond.

As alle oortuigings die produk is van evolusionêre druk vir oorlewing eerder as vir waarheid, dan geld dit ook vir hierdie oortuiging. Die oortuiging dat “alle oortuigings bloot vir oorlewing geëvolueer het” is dan self bloot ‘n produk van oorlewingsdruk, en ons het geen rede om dit as waar te aanvaar nie.

As jy die betroubaarheid van alle oortuigings bevraagteken, bevraagteken jy noodwendig ook die betroubaarheid van jou bevraagtekening. Jy kan nie op die leer staan en die leer uitsaag nie.

“Bewussyn is ‘n illusie.”

Hierdie bewering word gereeld gemaak deur denkers soos Daniel Dennett en sommige neurowetenskaplikes. Die idee is dat ons subjektiewe ervaring, die “innerlike wêreld” van kleure, klanke, emosies, gedagtes, nie werklik bestaan nie, maar ‘n soort illusie is wat deur die brein gegenereer word.

Maar wie het die illusie? ‘n Illusie is ‘n ervaring wat nie ooreenstem met die werklikheid nie, maar dit is nog steeds ‘n ervaring. As ek ‘n lugspieëling sien, is die oase nie werklik daar nie, maar my ervaring van die oase is volkome werklik. Om te sê dat bewussyn ‘n illusie is, is om te sê dat die ervaring van die illusie self nie werklik ‘n ervaring is nie. Dit is absurd.

Soos die filosoof Galen Strawson dit gestel het: om te ontken dat bewussyn bestaan, is “the strangest thing that has ever happened in the whole history of human thought.” Dit is die een ding wat ons met die mees absolute sekerheid weet, dat ons bewus is, en juis dit word ontken.

Descartes het dit reeds in die sewentiende eeu ingesien: ek kan aan alles twyfel, behalwe dat ek twyfel. Die twyfel self is ‘n bewuste handeling. Cogito, ergo sum. Jy kan nie bewussyn wegverklaar nie, want die wegverklaring self is ‘n daad van bewussyn.

“Vrye wil bestaan nie.”

Sommige neurowetenskaplikes en filosowe beweer dat vrye wil ‘n illusie is, dat al ons keuses ten volle bepaal word deur voorafgaande fisiese oorsake, en dat die gevoel dat ons “kies” bloot ‘n nagedagte is wat die brein genereer nadat die besluit reeds geneem is.

Maar het jy vryelik gekies om dit te glo? As vrye wil nie bestaan nie, dan het jy nie gekies om dit te glo nie. Dit is bloot die uitkoms van fisiese prosesse in jou brein, en jy kon nie anders nie. Maar as dit so is, dan maak dit geen sin om jou te prys vir jou “insig” of om ander te kritiseer omdat hulle anders dink nie. Die hele konsep van rasionele oortuiging, dat jy deur goeie argumente tot ‘n beter posisie beweeg word, veronderstel dat jy die vrye vermoë het om argumente te oorweeg en op grond daarvan van gedagte te verander.

As vrye wil ‘n illusie is, dan is rasionele debat self ‘n illusie. Dan het die neurowetenskaplike se boek nie die leser “oortuig” nie. Dit het bloot ‘n reeks fisiese gebeure in die leser se brein veroorsaak wat toevallig die gevoel van oortuiging produseer. Maar die neurowetenskaplike bedoel om te oortuig. Hy skryf argumente, rangskik bewyse, probeer rasionele gronde gee. Sy hele onderneming veronderstel die vrye wil wat hy ontken.

“Morele waardes is net evolusionêre aanpassings.”

As morele waardes niks meer is as evolusionêre aanpassings nie, as ons gevoel dat moord verkeerd is bloot die resultaat is van natuurlike seleksie wat groepsamewerking bevoordeel het, dan is die bewering “moord is verkeerd” nie waar in enige objektiewe sin nie. Dit is bloot ‘n emosie wat ons breine produseer, soos ‘n voorkeur vir soet kos.

Maar as dit so is, dan is dit ook nie verkeerd om te sê dat moord reg is nie. Dan is dit nie verkeerd om die swakkes uit te buit nie. Dan was die Holocaust nie werklik verkeerd nie, bloot ‘n gedragspatroon wat, vanuit die perspektief van die een groep se gene, nadelig was.

Byna niemand, ook nie die mees geharde naturalis, is bereid om hierdie gevolgtrekking te aanvaar nie. En die feit dat hulle dit nie kan aanvaar nie, is self ‘n getuienis dat hulle op ‘n vlak dieper as hulle filosofie weet dat morele waardes werklik is, nie bloot evolusionêre produkte nie.

Is dit verkeerd om te sê dat morele waardes werklik is? Op naturalistiese gronde kan jy nie eens die vraag koherent stel nie, want “verkeerd” self het op hierdie siening geen objektiewe inhoud nie.

Die patroon

Sien jy die patroon? Elkeen van hierdie stellings probeer iets ontken wat dit self noodwendig veronderstel:

• Om “geen waarheid” te beweer, veronderstel waarheid.
• Om scientisme te beweer, veronderstel nie-wetenskaplike kennis.
• Om kognitiewe onbetroubaarheid te beweer, veronderstel kognitiewe betroubaarheid.
• Om bewussyn te ontken, veronderstel bewussyn.
• Om vrye wil te ontken, veronderstel vrye wil.
• Om morele waardes te ontken, veronderstel morele waardes.

Dit is nie ‘n versameling losstaande probleempies nie. Dit is manifestasies van dieselfde diep probleem: die naturalistiese wêreldbeeld ondermyn die gereedskap wat nodig is om dit te beweer. Dit is ‘n wêreldbeeld wat slegs kan funksioneer deur te leen van ‘n raamwerk wat dit ontken. En daardie raamwerk, die een wat rasionaliteit, waarheid, bewussyn, vryheid, en morele waarde as werklik aanvaar, is die teistiese raamwerk.

Hoekom die Wetenskap Werk: Die Teistiese Verklaring

Die raaisel

In 1960 het die Hongaars-Amerikaanse fisikus Eugene Wigner ‘n beroemde artikel gepubliseer met die titel “The Unreasonable Effectiveness of Mathematics in the Natural Sciences.” Sy vraag was eenvoudig maar diepgaande: hoekom werk wiskunde so goed om die fisiese werklikheid te beskryf?

Wiskunde is, op die oog af, ‘n abstrakte menslike skepping, ‘n spel met simbole, definisies, en afleidingsreëls. En tog blyk dit dat hierdie “spel” die struktuur van die fisiese werklikheid met merkwaardige presisie beskryf. Die vergelykings wat wiskundiges in hulle studeerkamers aflei, blyk die beweging van planete, die gedrag van atome, en die struktuur van die kosmos te beskryf. Hoekom?

Albert Einstein het dieselfde verbasing uitgedruk: “The most incomprehensible thing about the universe is that it is comprehensible.” Die mees onverstaanbare ding van die heelal is dat dit verstaanbaar is. Dat menslike verstand, ‘n verstand wat geëvolueer het op die savannes van Afrika om vrugte te pluk en roofdiere te ontduik, die vergelykings van die kwantummeganika en die algemene relatiwiteitsteorie kan ontdek en verstaan, is op naturalistiese gronde ‘n diep raaisel.

Die naturalistiese stomheid

Op streng naturalistiese gronde is daar geen bevredigende antwoord op hierdie vraag nie.

As die heelal ‘n doellose produk is van blinde fisiese prosesse, is daar geen rede om te verwag dat dit rasioneel georden sal wees nie, dat dit wiskundig presiese wette sal volg, dat hierdie wette ontdekbaar sal wees deur menslike verstand, en dat die wiskunde wat ons uitdink in die abstrakte ook die konkrete fisiese werklikheid sal beskryf.

As ons kognitiewe vermoëns die produk is van onbegeleide evolusie, is daar geen rede om te verwag dat ons breine in staat sal wees om die diepste strukture van die werklikheid te ontdek nie. Natuurlike seleksie selekteer vir oorlewing, nie vir kosmologiese insig nie. ‘n Brein wat kan beplan hoe om ‘n mammoth te jag, het geen evolusionêre rede om die kromming van ruimte-tyd te kan verstaan nie.

Die naturalis kan sê: “Dit is net so. Die heelal is rasioneel georden, en ons breine kan dit verstaan. Dit is ‘n feit wat geen verdere verklaring nodig het nie.” Maar hierdie antwoord is filosofies onbevredigend. Dit is om ‘n merkwaardige toeval te aanvaar sonder verklaring, ‘n toeval wat aan die grondslag van alle wetenskap lê.

Die teïstiese antwoord

Op teïstiese gronde is die raaisel geen raaisel nie. Die antwoord is eenvoudig, maar verdien om met sorg uitgespreek te word.

Die heelal is rasioneel georden omdat dit geskep is deur ‘n rasionele God.

Die Skrif begin met die woord: “In die begin het God die hemel en die aarde geskape” (Gen. 1:1). En die Evangelie van Johannes begin met: “In die begin was die Woord, en die Woord was by God, en die Woord was God” (Joh. 1:1). Die Griekse woord Logos, hier vertaal as “Woord”, beteken veel meer as ‘n gesproke woord. Dit beteken Rede, Rasionaliteit, Ordende Beginsel. Die heelal is geskep deur die Logos, deur goddelike Rede. Dit is hoekom die heelal rasioneel is. Dit is hoekom dit wiskundig georden is. Dit is hoekom dit verstaan kan word.

Ons kan hierdie orde ontdek omdat ons geskep is na die beeld van hierdie rasionele God.

Die Imago Dei, die beeld van God, is nie net ‘n teologiese leerstuk nie; dit is die grondslag van alle menslike kennis. Ons is geskep deur ‘n God van Rede, na die beeld van daardie God van Rede, en ons is in ‘n wêreld geplaas wat deur daardie God van Rede geskep is. Daar is ‘n passing tussen ons verstand en die werklikheid, en hierdie passing is nie toevallig nie. Dit vloei voort uit die Logos wat beide ons verstand en die skepping fundeer.

Die wiskundige fisikus John Polkinghorne, self ‘n Anglikaanse priester, het dit treffend gestel: “The reason within us and the reason without”, die rede binne ons en die rede buite ons, “are akin because they have a common origin in the rationality of the Creator.” Die rede binne ons (ons vermoë om te dink) en die rede buite ons (die rasionele orde van die heelal) is verwant omdat hulle ‘n gemeenskaplike oorsprong het in die rasionaliteit van die Skepper.

Wiskunde beskryf die fisiese werklikheid omdat albei gegrond is in die verstand van God.

Wigner se “onredelike effektiwiteit van wiskunde” is op teïstiese gronde heeltemal redelik. Wiskunde is nie ‘n willekeurige menslike uitvinding nie. Dit is die ontdekking van strukture wat in die verstand van God bestaan en wat Hy in die skepping beliggaam het. Die wiskunde in ons koppe “pas” by die wiskunde in die heelal omdat albei uit dieselfde Bron kom.

Hierdie siening het ‘n lang en ryk geskiedenis. Kepler het sy astronomiese werk verstaan as die ontdekking van God se “geometrie.” Newton het sy Principia begin met die oortuiging dat die wiskundige wette van die natuur die gedagtes van die Skepper weerspieël. Leibniz het die harmonieuse struktuur van die werklikheid toegeskryf aan die volmaakte rede van God. Die moderne wetenskap is gebore uit hierdie oortuiging: dat die heelal bestudeer kan word omdat dit die werk van ‘n rasionele Verstand is.

Einstein se vraag beantwoord

“The most incomprehensible thing about the universe is that it is comprehensible.”

Op naturalistiese gronde is dit werklik onverstaanbaar. Daar is geen rede om te verwag dat ‘n doellose, blinde heelal deur menslike verstand verstaan sal kan word nie.

Op teïstiese gronde is dit nie onverstaanbaar nie. Dit is presies wat ons sou verwag. ‘n Rasionele God het ‘n rasionele heelal geskep en rasionele wesens daarin geplaas met die vermoë om dit te verstaan. Die verstaanbaarheid van die heelal is nie ‘n raaisel nie. Dit is ‘n gawe. Die manier waarop God ons uitnooi om Hom in Sy werke te ontmoet.

Die Nederlandse Geloofsbelydenis, Artikel 2, sê dit pragtig: die skepping is “voor ons oë soos ‘n mooi boek waarin alle skepsele, groot en klein, die letters is wat ons die onsienlike dinge van God duidelik laat sien.” Die wetenskap lees hierdie boek, en die feit dat die boek leesbaar is, is self ‘n getuienis van die Outeur.

Wigner se raaisel opgelos

Eugene Wigner kon nie verklaar hoekom wiskunde so effektief is nie. Op naturalistiese gronde is sy raaisel onoplosbaar. Maar op teïstiese gronde het dit ‘n elegante en bevredigende antwoord:

Die wiskunde is effektief omdat die Skepper van die heelal ‘n wiskundige Verstand is. Die wette van die fisika is wiskundig presiese uitdrukkings van die Skepper se ordenende wil. En ons kan hierdie wette ontdek omdat ons, as beeldraers van hierdie Skepper, ‘n afskaduwing van daardie wiskundige Verstand in ons dra.

Dit is nie ‘n “God van die gapings”-argument nie. Ons roep nie God in om ‘n leemte in ons wetenskaplike kennis te vul nie. Dit is eerder die teenoorgestelde: ons vra wat die grondslag is waarop alle wetenskaplike kennis moontlik is, en ons vind dat die teïstiese wêreldbeeld, en slegs die teïstiese wêreldbeeld, ‘n bevredigende antwoord bied.

Wat Naturalisme Kos

Die pryskaartjie

Tot dusver het ons gefokus op die logiese probleme van die naturalisme. Maar daar is ook ‘n ander kant: die praktiese gevolge. As jy streng naturalisme aanvaar, wat kos dit jou? Wat moet jy prysgee?

Die antwoord is ontstellend.

Objektiewe waarheid

As die naturalisme reg is en ons kognitiewe vermoëns die onbegeleide produk is van blinde evolusionêre prosesse, dan het ons geen rede om te vertrou dat ons breine ons na die waarheid lei nie. Dit beteken dat ons geen basis het vir die aanvaarding van objektiewe waarheid nie, insluitend wetenskaplike waarheid.

Die ironie is byna onverdraaglik: die wetenskap, die trots van die naturalistiese wêreldbeeld, verloor sy grondslag as naturalisme waar is. As ons breine nie betroubaar is nie, dan is ons wetenskaplike teorieë nie betroubaar nie. Dan is die hele wetenskaplike onderneming ‘n luukse illusie, ‘n reeks geluidjies wat deur breine gemaak word, sonder enige aanspraak op waarheid.

Objektiewe moraliteit

As die natuur al is wat bestaan, dan is daar geen transendente bron van morele waardes nie. Morele oortuigings is dan niks meer as evolusionêre aanpassings, sosiale konvensies, of persoonlike voorkeure nie. “Moord is verkeerd” het dan nie meer objektiewe geldigheid as “ek hou nie van spinasie nie.”

Die meeste naturaliste leef nie so nie. Hulle is dikwels diep morele mense met sterk oortuigings oor reg en verkeerd, geregtigheid en onreg. Maar hulle filosofie kan nie verklaar hoekom hierdie oortuigings meer is as subjektiewe gevoelens nie. Hulle leef asof morele waardes werklik is, maar hulle filosofie sê dat dit nie is nie.

Vrye wil en morele verantwoordelikheid

As elke gedagte en elke besluit volledig bepaal word deur voorafgaande fisiese oorsake, dan is vrye wil ‘n illusie. Maar as vrye wil ‘n illusie is, dan is morele verantwoordelikheid ook ‘n illusie. Jy kan niemand blameer vir wat hy gedoen het nie, want hy kon nie anders nie. Jy kan niemand prys vir sy goeie dade nie, want hy kon nie anders nie. Die hele stelsel van lof en blaam, beloning en straf, morele plig en morele skuld, val plat.

En weer: geen naturalis leef werklik so nie. Hulle blameer mense vir slegte dade. Hulle prys mense vir goeie dade. Hulle leef asof keuses werklik is. Hulle filosofie sê dit is ‘n illusie, maar hulle lewe sê dit is werklik.

Bewussyn

As die materialisme reg is, is bewussyn óf ‘n illusie (maar wie het die illusie?), óf ‘n epifenomeen, ‘n soort byproduk van die brein wat geen werklike kousale krag het nie, soos die stoom wat van ‘n trein afkom wat geen invloed op die trein se beweging het nie.

In albei gevalle is jou innerlike wêreld, jou ervarings, jou liefde, jou vreugde, jou verdriet, jou gevoel van skoonheid wanneer jy na ‘n sonsondergang kyk, niks werklik nie. Dit is óf ‘n illusie, óf ‘n nuttelose byproduk. Die rykste, mees intieme aspek van jou bestaan, die feit dat jy ‘n binnekant het, dat daar “iets is wat dit is om” jy te wees, word deur die naturalisme gereduseer tot niks.

Betekenis en doel

As die heelal ‘n doellose produk is van blinde fisiese prosesse, dan is daar geen ingebedde betekenis of doel in die werklikheid nie. Jy kan betekenis skep, jy kan jouself oortuig dat sekere dinge belangrik is, maar hierdie “betekenis” is dan niks meer as ‘n sielkundige meganisme nie. Op die grootste skaal is jou lewe, jou liefde, jou werk volkome onbeduidend. ‘n Flikkering van bewussyn in ‘n heelal wat vir niemand omgee nie.

Bertrand Russell, een van die twintigste eeu se groot ateïste, het dit met pynlike eerlikheid erken: “Brief and powerless is man’s life; on him and all his race the slow, sure doom falls pitiless and dark.” Die mens se lewe is kort en magteloos; op hom en sy hele geslag val die stadige, onverbiddelike ondergang, meedoënloos en donker. Dit is die wêreld wat streng naturalisme ons bied.

Menslike waardigheid

As daar geen God is nie en die mens nie na God se beeld geskep is nie, dan is menslike waardigheid niks meer as ‘n sosiale konvensie nie, ‘n afspraak wat ons gemaak het omdat dit nuttig is vir die samelewing, maar wat geen dieper grondslag het nie. En konvensies kan verander word. As ‘n samelewing besluit dat sekere mense op grond van ras, geslag, of verstandelike vermoë minder waardig is, dan is daar op naturalistiese gronde geen objektiewe basis om dit teen te staan nie.

Die geskiedenis van die twintigste eeu het ons in bloedige detail gewys wat gebeur wanneer menslike waardigheid as ‘n konvensie eerder as ‘n werklikheid beskou word. Die totalitêre regimes van die vorige eeu het met koue logika afgelei wat van hulle materialisme volg: as die mens net materie is, kan hy gebruik, verwerp, en vernietig word soos enige ander materiaal.

Die groot paradoks

Hier is die groot paradoks: byna geen naturalis leef werklik asof hierdie gevolge waar is nie.

Hulle leef asof waarheid werklik is. Hulle doen navorsing, skryf boeke, maak aansprake op kennis.

Hulle leef asof moraliteit werklik is. Hulle veroordeel onreg, veg vir menseregte, eis geregtigheid.

Hulle leef asof vrye wil werklik is. Hulle maak keuses, aanvaar verantwoordelikheid, oordeel ander.

Hulle leef asof bewussyn werklik is. Hulle geniet musiek, betreur verlies, ervaar liefde.

Hulle leef asof lewe betekenis het. Hulle werk, skep, streef, hoop.

Hulle leef asof menslike waardigheid werklik is. Hulle verdedig menseregte, veroordeel wreedheid, eis respek.

Met ander woorde: hulle leef binne die teistiese raamwerk terwyl hulle die teistiese raamwerk ontken. Hulle leen van die Christelike wêreldbeeld, die oortuiging dat waarheid, moraliteit, vryheid, bewussyn, betekenis, en waardigheid werklik is, terwyl hulle die fondament daarvan verwerp.

Dit is nie huigelary nie. Ons wil nie onvriendelik wees nie. Dit is eerder ‘n getuienis, ‘n onbewuste getuienis, van die feit dat die teistiese wêreldbeeld die werklikheid weerspieël. Die naturaliste kan nie konsekwent binne hulle eie raamwerk leef nie, want daardie raamwerk beskryf nie die werklikheid nie. Hulle word deur die werklikheid self gedwing om van die teïstiese raamwerk te leen. En hierdie feit is, op sy eie manier, ‘n kragtige argument vir die waarheid van die teïsme.

Die Gereformeerde Perspektief

Bavinck: Alle kennis veronderstel God

Herman Bavinck, die groot Nederlandse Gereformeerde teoloog van die laat negentiende en vroeë twintigste eeu, het met helderheid en diepte geskryf oor die verhouding tussen God en kennis. In sy monumentale Gereformeerde Dogmatiek maak hy ‘n punt wat direk relevant is: alle kennis veronderstel God.

Bavinck se argument is nie dat jy eers in God moet glo voordat jy enigiets kan weet nie. Dit sou absurd wees, want baie mense wat nie in God glo nie, weet tog baie dinge. Sy punt is eerder dat die moontlikheid van kennis, die feit dat daar ‘n rasioneel geordende werklikheid is wat deur rasionele wesens geken kan word, uiteindelik slegs verklaar kan word as die werklikheid die produk is van ‘n rasionele Skepper.

Bavinck skryf dat die “principles of knowledge”, die beginsels wat alle kennis moontlik maak, soos die wette van die logika en die betroubaarheid van ons sintuie, nie self deur die wetenskap bewys kan word nie. Hulle word deur die wetenskap veronderstel. En hulle vind hulle uiteindelike grondslag in God.

Dit beteken dat selfs die ateïs, wanneer hy redeneer, eksperimente doen, en wetenskaplike teorieë formuleer, afhanklik is van ‘n raamwerk wat slegs op teïstiese gronde sin maak. Hy gebruik gereedskap wat God voorsien het, om tot gevolgtrekkings te kom wat God ontken. Dit is nie ‘n argument dat die ateïs oneerlik is nie. Dit is ‘n argument dat die werklikheid teisties gestruktureer is, en dat selfs die ontkenning van God op die gereedskap van God aangewese is.

Calvyn: Die Sensus Divinitatis

Johannes Calvyn, die groot Reformator, skryf in die eerste hoofstukke van sy Institusie van die Christelike Godsdiens oor die sensus divinitatis, die “sin vir die goddelike” wat in elke mens ingebou is. Calvyn argumenteer dat God ‘n aangebore kennis van Homself in die menslike hart geplant het, ‘n kennis wat so diep is dat dit nie uitgewis kan word nie, selfs nie deur die sonde nie.

Hierdie sensus divinitatis beteken dat die mens altyd al op ‘n sekere vlak weet dat God bestaan, selfs wanneer hy dit onderdruk, ontken, of in afgodery verdraai. Paulus maak dieselfde punt in Romeine 1:19-20: “Omdat wat van God geken kan word, in hulle openbaar is, want God het dit aan hulle geopenbaar. Want sy onsigbare dinge kan van die skepping van die wêreld af in sy werke verstaan en duidelik gesien word, naamlik sy ewige krag en goddelikheid.”

Hierdie Bybelse en Calvinistiese insig werp lig op die verskynsel wat ons in hierdie sessie bespreek het. Hoekom kan die naturalis nie konsekwent binne sy eie raamwerk leef nie? Hoekom leef hy asof waarheid, moraliteit, vryheid, en betekenis werklik is, terwyl sy filosofie dit ontken? Die antwoord, vanuit die Gereformeerde perspektief, is dat die sensus divinitatis nooit heeltemal stilgemaak kan word nie. Selfs onderdruk, bly die kennis van God deur die werklikheid heenbreek. Die naturalis weet, op ‘n vlak dieper as sy filosofie, dat die werklikheid meer is as materie, en hy kan nie anders as om dienooreenkomstig te leef nie.

Dit is nie ‘n argument dat die naturalis oneerlik is nie. Dit is ‘n argument dat die werklikheid self teen die naturalisme getuig, en dat die sensus divinitatis die kanaal is waardeur hierdie getuienis die menslike hart bereik, selfs wanneer die verstand dit probeer onderdruk.

Van Til: Presupposisionalisme

Cornelius Van Til, die groot Suid-Afrikaans-gebore Gereformeerde filosoof en apologeet wat aan Westminster Theological Seminary doseer het, het hierdie insigte in ‘n sistematiese benadering ontwikkel wat as presupposisionalisme bekend staan.

Van Til se kernargument is eenvoudig maar diepgaande: jy kan nie teen God argumenteer sonder om die gereedskap te gebruik wat God voorsien het nie. Elke poging om die bestaan van God te ontken, veronderstel die wette van die logika, wat op teïstiese gronde sin maak want hulle weerspieël die rasionaliteit van God, maar op naturalistiese gronde onverklaarbaar is. Elke poging om die rasionele orde van die werklikheid te bevraagteken, veronderstel die rasionele orde van die werklikheid, want jy gebruik rasionele argumente om jou saak te maak. Elke poging om morele kritiek teen God te rig, veronderstel objektiewe morele waardes, wat op teïstiese gronde gefundeer is maar op naturalistiese gronde ‘n illusie is.

Van Til gebruik die beeld van ‘n kind wat op sy pa se skoot sit en sy pa in die gesig klap. Die kind kan sy pa net klap omdat die pa hom vashou. Net so kan die ateïs net teen God argumenteer omdat God die rasionele, morele, en ervaringsmatige raamwerk voorsien waarbinne sulke argumente moontlik is.

Dit beteken nie dat die ateïs “eintlik” ‘n teïs is nie. Dit beteken dat die werklikheid teïsties gestruktureer is, en dat elke poging om dit te ontken onvermydelik die gereedskap gebruik wat hierdie teïstiese struktuur voorsien. Die naturalisme is nie net ‘n verkeerde wêreldbeeld nie. Dit is ‘n onmoontlike wêreldbeeld, een wat nie koherent gehandhaaf kan word nie omdat dit die voorwaardes vir sy eie formulering ondermyn.

Die eenheid van die Gereformeerde insig

Bavinck, Calvyn, en Van Til sê in wese dieselfde ding vanuit verskillende hoeke:

• Bavinck: Alle kennis veronderstel God as grondslag.
• Calvyn: Elke mens het ‘n ingebedde kennis van God wat nie uitgewis kan word nie.
• Van Til: Elke argument teen God is afhanklik van die gereedskap wat God voorsien.

Hierdie drie insigte, saamgeneem, gee ons ‘n diep en koherente perspektief op die selfvernietiging van die naturalisme. Die naturalisme faal nie omdat Christene dit so wil hê nie. Dit faal omdat die werklikheid self, die werklikheid wat God geskep het, nie binne die naturalistiese raamwerk pas nie. En die feit dat selfs naturaliste nie konsekwent binne hulle eie raamwerk kan leef nie, is die sterkste getuienis hiervan.

Maar argumente alleen is nie genoeg nie

Tog moet ons hier iets byvoeg wat die Gereformeerde tradisie met kenmerkende eerlikheid bely. Al is hierdie argumente suiwer, al is die getuienis van die skepping oorweldigend, al breek die werklikheid by elke naad deur die te-klein boksie van die naturalisme: argumente alleen bring nie ‘n mens by reddende geloof uit nie. Die rede hiervoor lê nie in die swakheid van die argumente nie, maar in die diepte van ons val.

Paulus skryf in Romeine 1:20, ‘n teks wat ons in hierdie reeks telkens aangehaal het, dat God se ewige krag en goddelikheid “van die skepping van die wêreld af in sy werke verstaan en duidelik gesien word.” Maar let op wat hy een vers vroeër sê, in Romeine 1:18: “Die toorn van God word van die hemel af geopenbaar oor al die goddeloosheid en ongeregtigheid van die mense wat die waarheid in ongeregtigheid onderdruk.” Die waarheid word geopenbaar en onderdruk, tegelyk. Dit is nie dat die getuienis te vaag is nie; dit is dat die gevalle menslike hart die getuienis aktief weerstaan en wegdruk. Die probleem is nie te min lig nie. Die probleem is dat ons oë gesluit is.

Die Dordtse Leerreëls spreek hieroor met pastorale wysheid. In hoofstuk 3/4, artikels 11 en 12, bely die kerk dat God nie net uiterlik deur die verkondiging van die Woord werk nie, maar ook innerlik deur die kragtige werking van die Heilige Gees. Die Gees dring deur “tot in die binneste dele van die mens,” open die geslote hart, versag wat hard is, en “stort nuwe hoedanighede in die wil in.” Hierdie innerlike werk is nie ‘n sagte aanmoediging wat die mens kan kies om te aanvaar of te verwerp nie. Dit is die soewereine, onweerstaanbare genade van God wat die dooie lewendig maak. Sonder hierdie werk van die Gees bly die helderste argument ‘n klank wat teen ‘n geslote deur weerklink.

Die Heidelbergse Kategismus vra in Vraag 21: “Wat is ‘n ware geloof?” En die antwoord is veelseggend: dit is “‘n vaste kennis waardeur ek alles vir waar aanvaar wat God in sy Woord aan ons geopenbaar het, en tegelyk ‘n vaste vertroue wat die Heilige Gees deur die evangelie in my hart werk.” Geloof is nie bloot die intellektuele aanvaarding van korrekte proposisies nie. Dit is kennis en vertroue, en albei word deur die Gees gewerk. Geen reeks argumente, hoe suiwer ook al, kan hierdie vertroue in ‘n menslike hart skep nie. Dit is die Gees se werk, van begin tot einde.

Beteken dit dat die argumente nutteloos is? Glad nie. Dit beteken eerder dat ons die argumente in hulle regte plek plaas. Die argumente ruim die grond op, verwyder die klippe en dorings, breek die harde aardkors oop. Maar dit is die Heilige Gees wat die saad plant en laat groei. Die argumente antwoord op die besware wat mense verhinder om die evangelie te hoor; die Gees open die hart sodat die evangelie gehoor en geglo word. Ons werk is om die hindernisse eerlik en sorgvuldig te verwyder. God se werk is om geloof te wek.

Dis presies hoekom hierdie reeks binne ‘n gemeente aangebied word en nie in ‘n akademiese lesinglokaal nie. Ons bespreek hierdie dinge as ‘n geloofsgemeenskap wat saam bid, saam sing, saam aan die nagmaalstafel sit. Want ons weet: die kragtigste ding wat ons vir ‘n soekende vriend of familielid kan doen, is nie net om ‘n argument reg te kry nie, maar om vir hulle te bid. Om te bid dat die Gees oë sal oopmaak vir wat die skepping reeds uitroep. Om te bid dat die Gees harte sal versag wat deur jare se onderdrukking hard geword het. Ons argumenteer en ons bid, want ons weet dat albei nodig is, en dat die laaste werk God s’n is en nie ons s’n nie.

En dit, broers en susters, is nie ‘n swakheid van ons boodskap nie. Dit is juis die diepte en die skoonheid daarvan. ‘n God wat net argumente nodig gehad het, sou ‘n God wees wat op afstand staan, ‘n professoragtige God wat lesings gee en dan terugstaan om te sien wie slaag. Maar die God van die Bybel, die God van Dort en van die Heidelbergse Kategismus, is ‘n God wat self in die hart kom werk. Hy verwyder nie net die intellektuele hindernisse nie. Hy maak dooie harte lewendig. Die argumente maak die grond skoon; die Gees plant die saad. En dit is evangelie, goeie nuus, van begin tot einde.

Die Groter Prentjie: Naturalisme en die Geskiedenis van die Denke

‘n Afwyking, nie die norm

Metafisiese naturalisme, die oortuiging dat die natuur al is wat bestaan, is nie die “standaard” posisie in die geskiedenis van die menslike denke nie. Dit is ‘n afwyking, ‘n relatief onlangse ontwikkeling wat in die agtiende en negentiende eeue momentum gekry het en in die twintigste eeu kulturele dominansie verwerf het.

Vir die oorgrote meerderheid van die menslike geskiedenis, in alle kulture en alle tydperke, het mense geglo dat die werklikheid meer is as die fisiese. Daar is ‘n transendente dimensie wat die fisiese wêreld grond, orden, en betekenis gee. Hierdie oortuiging is nie net ‘n produk van onkunde nie (soos die naturaliste graag wil beweer). Dit is die spontane respons van die menslike gees op die werklikheid self.

Die opkoms van die metafisiese naturalisme in die Westerse wêreld was nie die gevolg van wetenskaplike ontdekkings nie. Soos ons in Sessie 2 gesien het, was die groot pioniersdenkers van die moderne wetenskap, Copernicus, Kepler, Galileo, Newton, Boyle, Faraday, Maxwell, almal teiste. Die wetenskap is nie gebore uit die naturalisme nie; die naturalisme het die wetenskap later gekaap en sy prestasies vir homself opgeëis.

Die werklike dryfveer agter die opkoms van die metafisiese naturalisme was nie wetenskaplik nie, maar filosofies en kultureel: die Verligting se nadruk op menslike outonomie, die Europese reaksie teen kerklike magsmisbruik, die aantreklikheid van ‘n wêreldbeeld wat die mens bevry van goddelike gesag. Nagel se eerlike erkenning van sy eie “kosmies-skugter houding” teenoor God is miskien meer verteenwoordigend van die werklike motivering agter baie ateisme as enige wetenskaplike argument.

Die koste van die naturalisme vir die wetenskap self

Daar is ‘n diep ironie in die verhouding tussen die naturalisme en die wetenskap. Die naturalisme beweer dat dit die beste vriend van die wetenskap is, dat dit die wetenskap bevry het van die beperkings van die godsdiens en dit in staat gestel het om te floreer. Maar soos ons gesien het, ondermyn die naturalisme juis die grondslae van die wetenskap.

As die naturalisme waar is, dan:

• Het ons geen rede om ons kognitiewe vermoëns te vertrou nie.
• Het ons geen verklaring vir die rasionele orde van die heelal nie.
• Het ons geen verklaring vir die effektiwiteit van die wiskunde nie.
• Het ons geen grondslag vir die oortuiging dat die werklikheid kenbaar is nie.
• Het ons geen verklaring vir die menslike drang om die waarheid te soek nie.

Die wetenskap floreer nie danksy die naturalisme nie, maar ten spyte daarvan. Die wetenskap floreer omdat die werklikheid teisties gestruktureer is, rasioneel georden, kenbaar, wiskundig presies, ongeag of die wetenskaplike dit erken al dan nie. Die ateistiese wetenskaplike se sukses is self ‘n getuienis van die teistiese aard van die werklikheid. Hy ontdek die gedagtes van God, al weier hy om dit so te noem.

‘n Uitnodiging, nie ‘n aanval nie

Ons moet hier versigtig wees met ons toon. Dit is nie ons bedoeling om naturaliste of ateiste aan te val, te beledig, of met akademiese argumente te verpletter nie. Ons wil nie “wen” nie. Ons wil die waarheid dien.

Baie ateiste en naturaliste is eerlike, intelligente mense wat opreg soek na die waarheid. Hulle het dikwels goeie redes, of redes wat hulle as goeie redes beskou, vir hulle posisie. Sommige het slegte ervarings met die kerk gehad. Sommige het intellektuele besware wat hulle ernstig opgeneem wil hê. Sommige is bloot in ‘n kulturele omgewing groot geword waarin naturalisme as die “vanselfsprekende” posisie beskou word.

Ons benadering is nie om hierdie mense te veroordeel nie, maar om te wys dat die naturalisme ‘n prys het wat baie van sy ondersteuners nie besef nie, en dat die teïstiese wêreldbeeld ‘n dieper en meer koherente verstaan van die werklikheid bied. Ons doen dit in die gees van 1 Petrus 3:15: “Wees altyd bereid om verantwoording te doen aan elkeen wat van julle rekenskap eis oor die hoop wat in julle is, maar met sagmoedigheid en vrees.”

Sagmoedigheid en vrees. Nie selfvoldaanheid en triomfalisme nie. Ons het immers self niks om oor te spog nie. Alle waarheid is God se waarheid, en as ons dit insien, is dit deur genade, nie deur ons eie slimheid nie.

Gevolgtrekking

Wat ons gesien het

Die onderskeid tussen metodologiese naturalisme (die nuttige wetenskaplike werkwyse) en metafisiese naturalisme (die filosofiese bewering dat die natuur al is wat bestaan) is die sleutel. Die gly van die een na die ander is ‘n logiese dwaaling wat nie die toets van noukeurige denke deurstaan nie.

C.S. Lewis se Argument uit die Rede het gewys dat as naturalisme waar is, elke gedagte in ons koppe die resultaat is van nie-rasionele fisiese oorsake, en dat ons dan geen rede het om enige gedagte as rasioneel te vertrou nie, insluitend die gedagte dat naturalisme waar is.

Plantinga se Evolusionêre Argument Teen Naturalisme het gewys dat die kombinasie van naturalisme en onbegeleide evolusie die betroubaarheid van ons kognitiewe vermoëns ondermyn. Nie evolusie self nie, maar die naturalisme wat daaraan geheg word.

Thomas Nagel, ‘n ateistiese filosoof, het verklaar dat die materialistiese wêreldbeeld “amper seker onwaar” is, en dieselfde probleme geidentifiseer as Lewis en Plantinga, maar vanuit ‘n heeltemal ander tradisie.

Die selfreferensiële probleem het konkreet geword in ‘n reeks stellings oor waarheid, scientisme, bewussyn, vrye wil, en morele waardes, wat elkeen die gereedskap ondermyn wat nodig is om dit te beweer.

Die teistiese verklaring vir die wetenskap se sukses: die heelal is verstaanbaar omdat dit die werk van ‘n rasionele God is; ons kan dit verstaan omdat ons na die beeld van hierdie God geskep is; wiskunde beskryf die werklikheid omdat albei in die verstand van God gegrond is.

Die prys van streng naturalisme is die verlies van objektiewe waarheid, morele waardes, vrye wil, bewussyn, betekenis, en menslike waardigheid. Byna geen naturalis betaal werklik hierdie prys nie; hulle leen eerder van die teistiese raamwerk.

En die Gereformeerde perspektief: Bavinck se insig dat alle kennis God veronderstel, Calvyn se leer oor die sensus divinitatis, en Van Til se argument dat elke argument teen God die gereedskap van God gebruik.

Die kerninsig

As ons al hierdie argumente tot een kerninsig moet saamvat, is dit dié:

Naturalisme faal nie vanweë wat die wetenskap ontdek het nie. Dit faal vanweë wat dit NIE kan verantwoord nie: die rasionaliteit wat die wetenskap moontlik maak.

Die heelal is nie bloot fisies nie. Dit is, op sy diepste vlak, die werk van Verstand, van die Logos, die Woord, die Rede wat alle dinge gemaak het en sonder wie niks gemaak is wat gemaak is nie (Joh. 1:3). Die rasionele orde van die heelal, die verstaanbaarheid van die werklikheid, die effektiwiteit van die wiskunde, die betroubaarheid van ons kognitiewe vermoëns, die werklikheid van bewussyn, die objektiwiteit van morele waardes: al hierdie dinge vind hulle grondslag in die God wat alle dinge geskep het en deur wie alle dinge bestaan.

Die naturalisme bied ‘n werklikheid wat te klein is. Dit probeer die volle rykdom van die menslike ervaring in ‘n boks druk wat te klein is, en by elke naad breek die werklikheid deur. Die Christelike teisme, met sy leer van ‘n rasionele Skepper, die Imago Dei, en die Logos wat vlees geword het, bied ‘n raamwerk wat groot genoeg is vir die volle werklikheid: die fisiese en die geestelike, die wetenskaplike en die morele, die rasionele en die persoonlike.

‘n Brug na Sessie 8

As naturalisme faal en teisme ‘n beter grondslag bied, nie net vir die geloof nie maar vir die wetenskap self, hoe hou ons dan wetenskap en geloof in die praktyk bymekaar? Hoe lees ‘n gelowige wetenskaplike navorsing? Hoe onderskei ons tussen data en interpretasie? Hoe leef ons met ope vrae sonder om ons geloof of ons intellek prys te gee?

Dit is die vrae waarmee Sessie 8, die laaste sessie van hierdie reeks, sal worstel. Ons keer terug na die pragtige beeld van die Nederlandse Geloofsbelydenis: twee boeke, een Outeur. Die boek van die natuur en die boek van die Skrif. En ons ontdek saam hoe om albei met vreugde, eerlikheid, en verwondering te lees.

Want dit is uiteindelik waartoe hierdie hele reis ons bring: nie na ‘n gevoel van intellektuele superioriteit nie, nie na ‘n gevoel dat “ons gewen het” nie, maar na verwondering. Verwondering oor ‘n heelal wat deur Verstand geskep is. Verwondering oor ‘n God wat ons na Sy beeld gemaak het sodat ons kan dink, ontdek, en verwonderd staan. Verwondering oor ‘n werklikheid wat so ryk en so diep is dat geen enkele dissipline dit alleen kan omvat nie.

Die Psalmdigter het dit lank voor ons geweet:

Psalm 8:4-5 – “As ek U hemel aanskou, die werk van U vingers, die maan en die sterre wat U gevorm het — wat is die mens dat U aan hom dink, en die mensekind dat U hom besoek?” (1953-vertaling)

Kom ons stap die laaste deel van hierdie reis saam, met oop oë, oop harte, en ‘n verwondering wat net groter word hoe meer ons sien.

The Self-Destruction of Naturalism

Introduction

We have walked a long road together in this series. Session 1 worked out the distinction between science and scientism. Session 2 discovered that the Christian faith was precisely the ground from which science grew. Session 3 yielded a universe with a beginning — a beginning that calls for a Cause. Session 4 placed us before a reality that looks like design, no matter how hard we try to explain it away. Session 5 showed that the real conflict is not between evolution and faith, but between science and the metaphysical addition that everything is “unguided” and “purposeless.” And Session 6 confronted us with something the materialist worldview cannot explain: the inner world of experience, the fact that there is “something it is like” to be you.

A pattern has begun to emerge through all these sessions. At every turning point the naturalistic worldview stands before a wall. And every time it climbs over that wall by borrowing tools that do not belong to it: rationality, order, purpose, truth. It is as if someone stubbornly denies that electricity exists, but switches on the light every evening.

This session makes that pattern explicit. Strict naturalism — the view that nature is all that exists — is not merely incomplete. It is self-destructive. It cannot even account for the tools it uses to make its own case: reason, truth, and science itself. And this problem is not an invention of Christian apologists. Some of the sharpest criticism comes from atheistic philosophers themselves.

Methodological vs. Metaphysical Naturalism

The Distinction That Changes Everything

The difference between two kinds of naturalism is often lost in popular debates, with serious consequences for clarity of thought.

Methodological naturalism is the procedure scientists follow when conducting research. When a chemist investigates a reaction, she looks for chemical causes. When a physicist analyses particle collisions, he looks for physical mechanisms. When a biologist studies the spread of a disease, she looks for biological and environmental factors. No one expects a scientist in the laboratory to say: “We cannot explain why the reaction happened this way — it must have been an angel.”

This is precisely as it should be. Think of a plumber called to fix a leak. When he crawls under the basin, he looks for physical causes: a cracked pipe, a loose connection, a worn seal. It would be absurd if he put down his tools and said: “I think it’s supernatural.” That he searches for physical causes does not mean he denies God’s existence. It simply means he is using the right tools for the right task. The plumber’s method presupposes physical causes. It says nothing about ultimate reality.

So too with science. Methodological naturalism is a working principle. It says: “Within the framework of scientific investigation we look for natural causes and mechanisms.” It is useful, fruitful, and no theologian or philosopher should object to it.

Metaphysical naturalism is something entirely different. It is not a method but a worldview. The philosophical claim that nature really is all that exists. No God. No soul. No transcendent reality. No purpose or meaning built into the universe. Everything that exists is matter, energy, and the laws that govern them.

Note: this is not a scientific finding. No experiment has ever demonstrated that God does not exist. No laboratory test can prove the absence of a transcendent reality. Metaphysical naturalism is a philosophical position — a faith conviction, if you will — that has entered science as philosophy in disguise. It is a presupposition that people bring to science, not a conclusion they draw from science.

The Conjuring Trick

Here lies the great conjuring trick of our time. Many popular science writers and communicators slide from the one to the other as if they were the same thing. The argument usually proceeds as follows:

Step 1: “Science works by looking for natural causes.” (Correct. This is methodological naturalism.)

Step 2: “Science has achieved great success with this approach.” (Correct. No one denies this.)

Step 3: “Therefore only natural causes exist.” (Wait. How did we get here?)

The leap from Step 2 to Step 3 is a logical fallacy. It is like saying: “My fishing net only catches fish; therefore nothing other than fish exists in the sea.” That your method is designed to find certain things does not mean only those things exist. Science is designed to investigate natural mechanisms. That it does not find God or moral values in a test tube tells us as much about the limitations of the method as about reality.

The British philosopher Mary Midgley made this point with characteristic clarity: to say that science has proved nothing exists beyond nature is like saying a telescope has proved music does not exist, because you cannot see it through the telescope. The instrument is not designed to observe it. That does not make the instrument useless. It merely makes the claim absurd.

Why This Distinction Matters

This distinction is not academic hair-splitting. It has practical consequences.

When someone says: “Science has proved there is no God,” they are using the authority of methodological naturalism (which has genuinely delivered impressive results) to lend credibility to metaphysical naturalism (which is an unprovable philosophical position). This is intellectually dishonest, even if it is often unconscious.

When a professor tells students: “In this class we follow science, not the Bible,” he often implies that science and the Bible necessarily conflict. But science as a method conflicts with nothing. It is a tool, like a microscope. What conflicts is metaphysical naturalism — the philosophical conviction that nature is all that exists — with the Christian faith. And that conflict is not a battle between science and faith. It is a battle between two philosophies, two worldviews.

The moment we see this distinction clearly, much of the cultural pressure on believers falls away. You do not have to choose between science and faith. You must choose between metaphysical naturalism and theism — and that is a philosophical choice, not a scientific one. As we shall now see, it is a choice in which naturalism has serious problems. Problems that ultimately make it self-destructive.

C.S. Lewis’s Argument from Reason

The Heart of the Argument

In 1947 C.S. Lewis published a book entitled Miracles. The chapter most important for our purposes is Chapter 3: “The Cardinal Difficulty of Naturalism.” Lewis formulates here an argument that sounds simple but is devastating for the naturalistic position.

The argument runs as follows:

Premise 1: If naturalism is true, every thought in our heads is the result of prior physical causes: brain chemistry, neuronal impulses, electrical signals. No exception. Every belief, every line of reasoning, every conclusion is ultimately nothing more than the outcome of a chain of physical events proceeding according to the laws of physics.

Premise 2: But if our thoughts are entirely determined by non-rational physical causes — if there is no room for anything like insight, understanding, or rational grounds — then we have no reason to trust that our thoughts are rational. A thought entirely caused by brain chemistry is no more or less “true” than another thought entirely caused by brain chemistry. Just as a stone that falls from a cliff is no more or less “true” than a stone lying in a river. Both are merely the result of physical causes.

Conclusion: But this undermining also applies to the thought “naturalism is true.” If naturalism is true, then the belief in naturalism is itself nothing more than the result of brain chemistry, and we have no reason to accept it as rationally grounded. A worldview that undermines the validity of all reasoning undermines itself as well.

Lewis puts it with an unforgettable image: it is as if someone claims that all thoughts are merely the noises a machine makes, and then expects you to accept this claim as a true thought, not merely a machine noise.

Or, in Lewis’s own words:

“If the whole universe has no meaning, we should never have found out that it has no meaning: just as, if there were no light in the universe and therefore no creatures with eyes, we should never know it was dark. Dark would be without meaning.”

If the universe is truly without meaning, we would never have been able to discover this. For the discovery itself presupposes the ability to distinguish between meaning and meaninglessness — an ability that is inexplicable in a meaningless universe.

The Logic Behind the Argument

The heart of the matter is the difference between causes and grounds.

A cause is a physical event that produces another physical event. The ball strikes the window; the window breaks. The neuron fires; the muscle contracts. This is the language of physics — cause and effect.

A ground is a rational connection that justifies a conclusion. The premises of an argument lead to a conclusion. We see that if all humans are mortal, and Socrates is a human, Socrates is mortal. This “seeing” is not a physical event like a ball striking a window. It is an act of rational understanding.

The question is: can a world that consists exclusively of causes also accommodate grounds? If every thought is 100% explained by the prior physical states of the brain, is there any room for rational grounds to play a role?

Lewis’s answer is: no. If you trace thought entirely back to physical causes, then you have removed the rational grounds from the picture. And if you have removed the rational grounds, then you no longer have any basis for regarding any thought as “true” or “rationally grounded.” You merely have a chain of physical events that are neither “true” nor “false,” just as the course of a river is neither “true” nor “false.”

This does not mean that brain chemistry is irrelevant to thought. Our thinking is bodily embodied, and our brains are wonderful instruments. But rationality cannot be reduced to chemistry. To say that an argument is valid is to say something more than describing the chemical composition of the neurons that produce it. If you deny that “more,” you deny rationality itself — and then you have no basis for asserting anything at all.

The Anscombe Debate

In 1948, a year after the publication of Miracles, the Oxford philosopher Elizabeth Anscombe challenged Lewis’s argument in a public debate at the Socratic Club. This debate is often — and inaccurately — presented as a crushing defeat for Lewis that forced him to abandon his argument.

The real history is more nuanced and more interesting.

Anscombe’s criticism was not that Lewis’s basic insight was wrong. Her objections were technical: she argued that Lewis had not carefully enough distinguished between different kinds of “causation,” and that his concept of an “irrational cause” was insufficiently defined. Lewis had said in the original version that if a thought is entirely caused by “irrational” causes, it cannot be rational. Anscombe pointed out that the word “cause” is ambiguous here: there is a difference between complete physical causes and the kind of rational grounds that underlie a conclusion, and Lewis needed to sharpen this distinction.

Lewis took the criticism seriously. In the revised edition of Miracles (1960) he substantially rewrote Chapter 3. He refined his argument — he did not abandon it. The new version makes the distinction between causes and grounds much clearer and is philosophically stronger than the original.

What is especially noteworthy: Anscombe herself later acknowledged that she had not disputed Lewis’s fundamental point — namely that naturalism has a problem accounting for rationality. Her objection was to the formulation, not to the insight. And Lewis’s revised argument corrected these formulation errors.

The lesson from this is twofold. Lewis was honest enough to receive criticism and improve his work — an example we can all follow. And the myth that Anscombe “destroyed” Lewis’s argument is itself an example of how a complicated history is simplified into a simple, inaccurate narrative.

The Enduring Power of Lewis’s Insight

Lewis’s argument remains relevant because it identifies a problem that lies deep in the heart of the naturalistic position. It is not an argument about specific scientific findings, but about the preconditions for rationality itself. And it did not depend on Lewis’s specific formulation. Alvin Plantinga revived it in a new, more technical guise in the late twentieth century.

Plantinga’s Evolutionary Argument Against Naturalism (EAAN)

The Background

Alvin Plantinga is one of the most influential philosophers of the twentieth and twenty-first centuries. As a Reformed thinker he has made a major contribution to the philosophy of religion and epistemology from the 1960s to the present. He is the recipient of the Templeton Prize and has received wide recognition, even from colleagues who do not share his conclusions.

In his book Warrant and Proper Function (1993), and later in Where the Conflict Really Lies (2011), Plantinga develops an argument that places Lewis’s basic insight in a rigorous philosophical framework. He calls it the Evolutionary Argument Against Naturalism.

The argument is not against evolution. Plantinga has no objection to the biological theory of evolution as such. His argument is against the combination of evolution and naturalism: the claim that evolution is an entirely unguided, purposeless process occurring in a universe without God and without purpose.

The Argument Step by Step

Step 1: The question. If naturalism and evolution are both true — if our cognitive faculties are the product of an entirely unguided evolutionary process in a godless universe — what reason do we have to trust that these faculties are reliable? That they lead us to truth?

Step 2: What does natural selection select for? Natural selection selects for survival and reproduction, not for true beliefs. An organism that survives and reproduces is favoured by natural selection, regardless of whether its beliefs are true or false. The only thing that counts, in strictly evolutionary terms, is behaviour that promotes survival.

Step 3: The connection between beliefs and behaviour. Here it gets interesting. For beliefs to be evolutionarily selected, they must have an impact on behaviour. But the same behaviour can be produced by radically different beliefs. This is the key point.

Plantinga gives a famous (and deliberately humorous) example: imagine a prehistoric human, Paul, who encounters a tiger. Paul runs away — behaviour that promotes survival. But why did Paul run? Here are a few possibilities:

• Paul believes tigers are dangerous and wants to get away. (True belief, appropriate behaviour.)
• Paul believes the tiger is a friendly cat and wants to pet it, but first wants to practise by running hard for a bit. (False belief, same behaviour.)
• Paul believes he is in a race and wants to win. (False belief, same behaviour.)
• Paul wants to catch the tiger as a pet and thinks running is the best way to lure a tiger. (False belief, same behaviour.)

In each of these cases Paul survives. Natural selection cannot distinguish which beliefs are true. It can only “see” which behaviour promotes survival. The connection between true beliefs and survival behaviour is much looser than we intuitively think.

Step 4: The probability. Plantinga formulates it formally: let R be the reliability of our cognitive faculties, N naturalism, and E (unguided) evolution. The question then is: what is P(R

N&E) — the probability that our cognitive faculties are reliable, given that naturalism and unguided evolution are true?

Plantinga argues that this probability is low, or at best inscrutable. If natural selection only selects for behaviour and not for the truth of beliefs, then we have no reason to expect that our brains, shaped by this process, will be reliable instruments for the discovery of truth. They are instruments for survival, and survival and truth are not the same thing.

Step 5: The self-undermining. But if we cannot trust our cognitive faculties to be reliable, then we cannot trust any of our beliefs — including our belief that naturalism and evolution are true. The position undermines itself. You are standing on a ladder and sawing the ladder out from under you. You fall together with the ladder.

Naturalism + unguided evolution generates a reason to distrust naturalism + unguided evolution. A self-destructive position.

Why This Is Not an Argument Against Evolution

What does Plantinga not say? He does not say that evolution is untrue. He does not say that natural selection is not a real mechanism. He does not say that believers should reject evolution.

What he says is that the combination of evolution and naturalism is self-destructive. Remove the naturalism, and the problem disappears. If God guided the evolutionary process — if the process was not blind and purposeless but directed by a rational Creator to produce beings who can know reality — then there is no problem with the reliability of our cognitive faculties. God made us so that we can think, reason, and discover the truth.

Theistic evolution does not have this problem. The problem is unique to the combination of evolution with the assumption that there is no God and no purpose. It is naturalism that creates the problem, not evolution.

Objections and Answers

Plantinga’s argument has received wide attention and criticism. A few of the most important objections deserve honest attention.

Objection 1: Content externalism. Some philosophers argue that the content of our beliefs is not independent of the world — that beliefs derive their content partly from the things in the world they are about. If Paul believes a tiger is dangerous, then his belief is about the real tiger, and the fact that it is about a real thing ensures a certain degree of reliability.

Plantinga’s answer: even if content externalism is correct, it does not explain the reliability of our abstract reasoning. Our ability to prove mathematical theorems or discover the foundations of physics goes far beyond what is needed for survival, and content externalism cannot explain why our brains are reliable at this level.

Objection 2: Reliabilism. Other philosophers say that our cognitive processes are reliable if they in fact, as a statistical matter, predominantly produce true beliefs, regardless of the mechanism by which they arose.

Plantinga’s answer: this misses the point. The question is not whether our cognitive faculties are in fact reliable (he is not going to deny this), but whether, given naturalism and unguided evolution, we have any reason to expect them to be reliable. The reliabilist takes reliability as a fact; Plantinga asks whether it is an expected outcome on naturalistic grounds. And his answer is: no.

Objection 3: Survival requires truth. The most intuitive objection is that true beliefs are better for survival than false beliefs. An animal with an accurate picture of its environment will survive better than one with an inaccurate picture.

Plantinga acknowledges there is a connection, but argues that it is not strong enough. For many of our most important beliefs — about the nature of reality, about mathematical truths, about the foundations of logic — the connection with survival is extremely vague. A cave dweller has no survival advantage in knowing that the earth orbits the sun, or that there is an infinite number of prime numbers. That our brains can discover these kinds of truths — truths without survival value — is a puzzle on naturalistic grounds.

Patricia Churchland, a prominent naturalistic philosopher, made this point with striking honesty: “Boiling down enormous complexities to their extreme, the principal chore of nervous systems is to get the body parts where they should be in order that the organism may survive. … Improvements in sensorimotor control confer an evolutionary advantage: a fancier style of representing is advantageous so long as it is geared to the organism’s way of life and enhances the organism’s chances of survival. Truth, whatever that is, definitely takes the hindmost.” Evolution cares about survival, not about truth. Churchland says this as a naturalist, and she apparently does not understand that she is thereby pulling the rug out from under her own position.

The Power of the Argument

The power of Plantinga’s EAAN lies in the fact that it places the naturalist in an inescapable dilemma:

• If you accept that P(R

  N&E) is low, then you must concede that you have no reason to trust your own beliefs — including your belief in naturalism.

• If you accept that P(R

  N&E) is high, you must explain why — and on strictly naturalistic grounds this is extremely difficult to do.

• If you say that P(R

  N&E) is inscrutable, then you still have no reason to trust your cognitive faculties, and again you undermine your own position.

In every case the naturalist is in trouble. The argument is not an empirical claim about the brain. It is an epistemological problem about the grounds for trusting our rational faculties. And it is a problem the naturalist cannot solve without leaving naturalism behind.

Thomas Nagel’s Confession

An Atheist Against Materialism

In 2012 one of the most respected philosophers in the English-speaking world published a small book that unleashed a storm. The book was Mind and Cosmos: Why the Materialist Neo-Darwinian Conception of Nature Is Almost Certainly False. The author was Thomas Nagel, professor of philosophy and law at New York University.

The reaction was fierce. Nagel is not a Christian. He is not a theist. He describes himself as an atheist. And yet he had the courage to openly declare that the reigning materialist worldview — the idea that everything can ultimately be explained by physics, chemistry, and unguided evolution — is “almost certainly false.”

The book was welcomed by some academics as a necessary corrective; by others it was condemned as if Nagel had committed treason. Steven Pinker dismissed it on Twitter (as it was still called then); Daniel Dennett called it “an act of intellectual suicide.” The fierceness of the reaction is itself telling. It shows how deep the loyalty to the materialist worldview runs in certain academic circles, and how threatening it feels when one of your own people questions the orthodoxy.

Nagel’s Argument

Nagel’s argument is not one-dimensional. He identifies three areas in which the materialist worldview fails:

1. Consciousness. The “hard problem of consciousness” (which we discussed in Session 6) is, according to Nagel, not a temporary gap in our knowledge, but an indication that the materialist framework is fundamentally inadequate. That a subjective, inner world of experience exists — that there is “something it is like” to be a bat or a human being (as he put it in his famous 1974 article “What Is It Like to Be a Bat?”) — cannot be explained by any description of physical processes, no matter how detailed.

2. Reason. The ability to reason — to perceive logical connections and to distinguish valid arguments from invalid ones — is not explicable as merely a product of natural selection. Rationality presupposes a normative dimension (the difference between right and wrong in thinking) that cannot be derived from physics. Here Nagel joins Lewis and Plantinga, although he works from an entirely different tradition.

3. Moral value. That some things are really good and others really bad — not merely “good for survival” or “bad for reproduction,” but intrinsically good or bad — is inexplicable on materialist grounds. Materialism can describe what people do and what they feel, but it cannot explain that some things are really right and others really wrong.

Nagel’s conclusion is striking:

“The intelligibility of the world is no accident.”

The fact that the universe is intelligible — that human minds can discover the laws of physics and grasp the structure of reality — is not a coincidence. It calls for an explanation. And the materialist worldview does not have one.

Nagel proposes that there is a “natural teleology” built into reality — an inherent directedness toward consciousness and reason and value. The universe is not a purposeless, blind process; it is, at a deep level, directed toward the production of conscious, rational, morally aware beings.

What Nagel Does Not Say

Nagel does not go to theism. He is open about it: he has a “cosmic authority problem,” as he himself calls it in The Last Word. He does not want God to exist, and he acknowledges that this desire influences his philosophy. This honesty is refreshing and rare.

But precisely because Nagel is not a theist, his critique of materialism is all the more powerful. It cannot be dismissed as “religious propaganda,” or as the work of someone with a predetermined theological agenda. It is the critique of someone who stands within the secular academic world and says: “The emperor has no clothes.”

Nagel’s work shows that the problems with materialism are not merely Christian concerns. They are philosophical concerns that any honest thinker, believer or not, must confront. That an atheist like Nagel identifies the same problems as Lewis and Plantinga strengthens the argument rather than weakening it. Truth is not a Christian monopoly. It is universal, and any honest search for truth will ultimately arrive at the same questions.

The Self-Referential Problem

Statements That Undermine Themselves

So far the discussion has been fairly abstract. Let us make it concrete. There is a whole series of statements that the naturalistic worldview generates, but that undermine themselves as soon as you examine them carefully. Each is an example of what philosophers call a performative contradiction: a claim that, by the very fact of being made, proves that it cannot be true.

“There is no truth.”

This statement is perhaps the simplest example. If it is true that there is no truth, then the statement “there is no truth” is itself not true — and then we need not accept it. If it is untrue, then there is truth, and the statement is wrong.

In either case the statement falls flat. It is a logical snake pit: it cannot even in principle be true, because the attempt to assert it presupposes its truth, which contradicts its content.

A more sophisticated version is the postmodern claim that “all truth is relative” or “all truth is socially constructed.” But is that claim relative? Is it socially constructed? If so, it has no universal validity and we need not accept it. If not — if it is an objective truth that all truth is relative — then it is itself a counter-example to its own thesis.

“Science is the only path to knowledge.”

This claim — the core of scientism — we already discussed in Session 1. But it deserves repetition.

The question is simple: did science tell you that science is the only path to knowledge? Is this statement itself a scientific finding? Is it the outcome of an experiment, an observation, a measurement?

The answer is clearly no. No experiment can prove that only experiments yield knowledge. No observation can establish that only observations provide knowledge. The claim that science is the only path to knowledge is itself a philosophical claim, and it is therefore excluded by its own standard. If only science can produce knowledge, and this claim is not scientific, then we cannot know it.

Scientism saws off the branch on which it sits.

“All beliefs are the product of evolution for survival, not for truth.”

This is a variation on Plantinga’s argument, but in popular form.

If all beliefs are the product of evolutionary pressure for survival rather than for truth, then this also applies to this belief. The belief that “all beliefs merely evolved for survival” is then itself merely a product of survival pressure, and we have no reason to accept it as true.

If you question the reliability of all beliefs, you necessarily also question the reliability of your questioning. You cannot stand on the ladder and saw the ladder out.

“Consciousness is an illusion.”

This claim is regularly made by thinkers such as Daniel Dennett and some neuroscientists. The idea is that our subjective experience — the “inner world” of colours, sounds, emotions, thoughts — does not really exist, but is a kind of illusion generated by the brain.

But who is having the illusion? An illusion is an experience that does not correspond with reality, but it is still an experience. If I see a mirage, the oasis is not really there, but my experience of the oasis is perfectly real. To say that consciousness is an illusion is to say that the experience of the illusion is not itself really an experience. That is absurd.

As the philosopher Galen Strawson put it: to deny that consciousness exists is “the strangest thing that has ever happened in the whole history of human thought.” It is the one thing we know with the most absolute certainty — that we are conscious — and precisely this is denied.

Descartes already saw this in the seventeenth century: I can doubt everything, except that I doubt. The doubt itself is a conscious act. Cogito, ergo sum. You cannot explain away consciousness, because the explaining away is itself an act of consciousness.

“Free will does not exist.”

Some neuroscientists and philosophers claim that free will is an illusion — that all our choices are entirely determined by prior physical causes, and that the feeling we “choose” is merely an afterthought generated by the brain after the decision has already been made.

But did you freely choose to believe this? If free will does not exist, then you did not choose to believe it. It is merely the outcome of physical processes in your brain, and you could not have done otherwise. But if so, then it makes no sense to praise you for your “insight” or to criticise others for thinking differently. The entire concept of rational persuasion — that you are moved to a better position by good arguments — presupposes that you have the free capacity to consider arguments and on the basis of them change your mind.

If free will is an illusion, then rational debate itself is an illusion. Then the neuroscientist’s book has not “convinced” the reader. It has merely caused a series of physical events in the reader’s brain that happen to produce the feeling of conviction. But the neuroscientist intends to convince. He writes arguments, arranges evidence, tries to give rational grounds. His entire enterprise presupposes the free will he denies.

“Moral values are merely evolutionary adaptations.”

If moral values are nothing more than evolutionary adaptations — if our feeling that murder is wrong is merely the result of natural selection favouring group cooperation — then the claim “murder is wrong” is not true in any objective sense. It is merely an emotion our brains produce, like a preference for sweet food.

But if that is so, then it is also not wrong to say that murder is right. Then it is not wrong to exploit the weak. Then the Holocaust was not really wrong — merely a behavioural pattern that, from the perspective of one group’s genes, was disadvantageous.

Almost no one — not even the most hardened naturalist — is willing to accept this conclusion. And the fact that they cannot accept it is itself a testimony that at a level deeper than their philosophy they know that moral values are real, not merely evolutionary products.

Is it wrong to say moral values are real? On naturalistic grounds you cannot even coherently pose the question, because “wrong” itself has no objective content on this view.

The Pattern

Do you see the pattern? Each of these statements tries to deny something it necessarily presupposes:

• To assert “no truth” presupposes truth.
• To assert scientism presupposes non-scientific knowledge.
• To assert cognitive unreliability presupposes cognitive reliability.
• To deny consciousness presupposes consciousness.
• To deny free will presupposes free will.
• To deny moral values presupposes moral values.

This is not a collection of disconnected little problems. These are manifestations of the same deep problem: the naturalistic worldview undermines the tools needed to assert it. It is a worldview that can only function by borrowing from a framework it denies. And that framework — the one that accepts rationality, truth, consciousness, freedom, and moral value as real — is the theistic framework.

Why Science Works: The Theistic Explanation

The Puzzle

In 1960 the Hungarian-American physicist Eugene Wigner published a famous article with the title “The Unreasonable Effectiveness of Mathematics in the Natural Sciences.” His question was simple but profound: why does mathematics work so well to describe physical reality?

Mathematics is, on the face of it, an abstract human creation — a game with symbols, definitions, and rules of derivation. And yet it turns out that this “game” describes the structure of physical reality with remarkable precision. The equations mathematicians derive in their studies turn out to describe the motion of planets, the behaviour of atoms, and the structure of the cosmos. Why?

Albert Einstein expressed the same astonishment: “The most incomprehensible thing about the universe is that it is comprehensible.” That human minds — minds that evolved on the savannas of Africa to pick fruit and dodge predators — can discover and understand the equations of quantum mechanics and general relativity is, on naturalistic grounds, a deep puzzle.

Naturalistic Silence

On strictly naturalistic grounds there is no satisfying answer to this question.

If the universe is a purposeless product of blind physical processes, there is no reason to expect that it will be rationally ordered — that it will follow mathematically precise laws, that these laws will be discoverable by human minds, and that the mathematics we invent in the abstract will also describe the concrete physical reality.

If our cognitive faculties are the product of unguided evolution, there is no reason to expect that our brains will be capable of discovering the deepest structures of reality. Natural selection selects for survival, not for cosmological insight. A brain that can plan how to hunt a mammoth has no evolutionary reason to be able to understand the curvature of space-time.

The naturalist can say: “It is just so. The universe is rationally ordered, and our brains can understand it. This is a fact that needs no further explanation.” But this answer is philosophically unsatisfying. It is to accept a remarkable coincidence without explanation — a coincidence that lies at the foundation of all science.

The Theistic Answer

On theistic grounds the puzzle is no puzzle at all. The answer is simple, but deserves to be stated with care.

The universe is rationally ordered because it was created by a rational God.

Scripture begins with the word: “In the beginning, God created the heavens and the earth” (Gen. 1:1). And the Gospel of John begins with: “In the beginning was the Word, and the Word was with God, and the Word was God” (John 1:1). The Greek word Logos, here translated as “Word,” means much more than a spoken word. It means Reason, Rationality, Ordering Principle. The universe was created by the Logos — by divine Reason. This is why the universe is rational. This is why it is mathematically ordered. This is why it can be understood.

We can discover this order because we were created in the image of this rational God.

The Imago Dei — the image of God — is not merely a theological doctrine; it is the foundation of all human knowledge. We were created by a God of Reason, in the image of that God of Reason, and we were placed in a world created by that God of Reason. There is a fit between our minds and reality, and this fit is not accidental. It flows from the Logos who grounds both our minds and creation.

The mathematical physicist John Polkinghorne, himself an Anglican priest, put it strikingly: “The reason within us and the reason without are akin because they have a common origin in the rationality of the Creator.”

Mathematics describes physical reality because both are grounded in the mind of God.

Wigner’s “unreasonable effectiveness of mathematics” is, on theistic grounds, entirely reasonable. Mathematics is not an arbitrary human invention. It is the discovery of structures that exist in the mind of God and that He has embodied in creation. The mathematics in our heads “fits” the mathematics in the universe because both come from the same Source.

This view has a long and rich history. Kepler understood his astronomical work as the discovery of God’s “geometry.” Newton began his Principia with the conviction that the mathematical laws of nature reflect the thoughts of the Creator. Leibniz attributed the harmonious structure of reality to the perfect reason of God. Modern science was born from this conviction: that the universe can be studied because it is the work of a rational Mind.

Einstein’s Question Answered

“The most incomprehensible thing about the universe is that it is comprehensible.”

On naturalistic grounds this is truly incomprehensible. There is no reason to expect that a purposeless, blind universe could be understood by human minds.

On theistic grounds it is not incomprehensible at all. It is precisely what we would expect. A rational God created a rational universe and placed rational beings in it with the ability to understand it. The comprehensibility of the universe is not a puzzle. It is a gift — the way God invites us to meet Him in His works.

The Belgic Confession, Article 2, says it beautifully: creation is “before our eyes like a beautiful book in which all creatures, great and small, are as letters leading us to perceive clearly the invisible things of God.” Science reads this book, and the fact that the book is readable is itself a testimony to the Author.

Wigner’s Puzzle Solved

Eugene Wigner could not explain why mathematics is so effective. On naturalistic grounds his puzzle is unsolvable. But on theistic grounds it has an elegant and satisfying answer:

Mathematics is effective because the Creator of the universe is a mathematical Mind. The laws of physics are mathematically precise expressions of the Creator’s ordering will. And we can discover these laws because, as image-bearers of this Creator, we carry a reflection of that mathematical Mind within us.

This is not a “god of the gaps” argument. We are not invoking God to fill a gap in our scientific knowledge. It is rather the opposite: we are asking what the foundation is on which all scientific knowledge is possible, and we find that the theistic worldview — and only the theistic worldview — offers a satisfying answer.

What Naturalism Costs

The Price Tag

So far we have focused on the logical problems of naturalism. But there is also another side: the practical consequences. If you accept strict naturalism, what does it cost you? What must you give up?

The answer is disturbing.

Objective Truth

If naturalism is right and our cognitive faculties are the unguided product of blind evolutionary processes, then we have no reason to trust that our brains lead us to truth. This means we have no basis for accepting objective truth — including scientific truth.

The irony is almost unbearable: science, the pride of the naturalistic worldview, loses its foundation if naturalism is true. If our brains are not reliable, then our scientific theories are not reliable. Then the entire scientific enterprise is a luxurious illusion — a series of noises made by brains, with no claim to truth.

Objective Morality

If nature is all that exists, then there is no transcendent source of moral values. Moral convictions are then nothing more than evolutionary adaptations, social conventions, or personal preferences. “Murder is wrong” then has no more objective validity than “I don’t like spinach.”

Most naturalists do not live this way. They are often deeply moral people with strong convictions about right and wrong, justice and injustice. But their philosophy cannot explain why these convictions are more than subjective feelings. They live as if moral values are real, but their philosophy says they are not.

Free Will and Moral Responsibility

If every thought and every decision is entirely determined by prior physical causes, then free will is an illusion. But if free will is an illusion, then moral responsibility is also an illusion. You cannot blame anyone for what they did, because they could not have done otherwise. You cannot praise anyone for their good deeds, because they could not have done otherwise. The entire system of praise and blame, reward and punishment, moral duty and moral guilt collapses.

And again: no naturalist really lives this way. They blame people for bad deeds. They praise people for good deeds. They live as if choices are real. Their philosophy says it is an illusion, but their lives say it is real.

Consciousness

If materialism is right, consciousness is either an illusion (but who is having the illusion?) or an epiphenomenon — a kind of by-product of the brain that has no real causal power, like the steam coming off a train that has no influence on the train’s movement.

In both cases your inner world — your experiences, your love, your joy, your grief, your sense of beauty when you look at a sunset — is nothing real. It is either an illusion or a useless by-product. The richest, most intimate aspect of your existence — the fact that you have an inside, that there is “something it is like” to be you — is reduced by naturalism to nothing.

Meaning and Purpose

If the universe is a purposeless product of blind physical processes, then there is no embedded meaning or purpose in reality. You can create meaning, you can convince yourself that certain things are important, but this “meaning” is then nothing more than a psychological mechanism. On the grandest scale, your life, your love, your work are completely insignificant. A flicker of consciousness in a universe that cares for no one.

Bertrand Russell, one of the twentieth century’s great atheists, acknowledged this with painful honesty: “Brief and powerless is man’s life; on him and all his race the slow, sure doom falls pitiless and dark.” This is the world that strict naturalism offers us.

Human Dignity

If there is no God and humanity is not created in God’s image, then human dignity is nothing more than a social convention — an agreement we made because it is useful for society, but which has no deeper foundation. And conventions can be changed. If a society decides that certain people on the basis of race, gender, or intellectual ability are less worthy, then on naturalistic grounds there is no objective basis to resist this.

The history of the twentieth century showed us in bloody detail what happens when human dignity is regarded as a convention rather than a reality. The totalitarian regimes of the previous century deduced with cold logic what follows from their materialism: if the human being is merely matter, he can be used, discarded, and destroyed like any other material.

The Great Paradox

Here is the great paradox: almost no naturalist really lives as if these consequences are true.

They live as if truth is real. They do research, write books, make claims to knowledge.

They live as if morality is real. They condemn injustice, fight for human rights, demand justice.

They live as if free will is real. They make choices, accept responsibility, judge others.

They live as if consciousness is real. They enjoy music, mourn loss, experience love.

They live as if life has meaning. They work, create, strive, hope.

They live as if human dignity is real. They defend human rights, condemn cruelty, demand respect.

In other words: they live within the theistic framework while denying the theistic framework. They borrow from the Christian worldview — the conviction that truth, morality, freedom, consciousness, meaning, and dignity are real — while rejecting its foundation.

This is not hypocrisy. We do not wish to be unkind. It is rather a testimony — an unconscious testimony — to the fact that the theistic worldview reflects reality. The naturalists cannot live consistently within their own framework, because that framework does not describe reality. They are forced by reality itself to borrow from the theistic framework. And this fact is, in its own way, a powerful argument for the truth of theism.

The Reformed Perspective

Bavinck: All Knowledge Presupposes God

Herman Bavinck, the great Dutch Reformed theologian of the late nineteenth and early twentieth centuries, wrote with clarity and depth about the relationship between God and knowledge. In his monumental Reformed Dogmatics he makes a point directly relevant to our discussion: all knowledge presupposes God.

Bavinck’s argument is not that you must first believe in God before you can know anything. That would be absurd, for many people who do not believe in God nonetheless know many things. His point is rather that the possibility of knowledge — the fact that there is a rationally ordered reality that can be known by rational beings — can ultimately only be explained if reality is the product of a rational Creator.

Bavinck writes that the “principles of knowledge” — the principles that make all knowledge possible, such as the laws of logic and the reliability of our senses — cannot themselves be proved by science. They are presupposed by science. And they find their ultimate foundation in God.

This means that even the atheist, when he reasons, conducts experiments, and formulates scientific theories, is dependent on a framework that only makes sense on theistic grounds. He uses tools that God has provided to reach conclusions that deny God. This is not an argument that the atheist is dishonest. It is an argument that reality is theistically structured, and that even the denial of God depends on God’s tools.

Calvin: The Sensus Divinitatis

John Calvin, the great Reformer, writes in the opening chapters of his Institutes of the Christian Religion about the sensus divinitatis — the “sense of the divine” built into every human being. Calvin argues that God has planted an innate knowledge of Himself in the human heart — a knowledge so deep that it cannot be erased, not even by sin.

This sensus divinitatis means that human beings have always known at a certain level that God exists, even when they suppress it, deny it, or distort it into idolatry. Paul makes the same point in Romans 1:19-20: “For what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made” (ESV).

This biblical and Calvinian insight sheds light on the phenomenon we have discussed in this session. Why can the naturalist not live consistently within his own framework? Why does he live as if truth, morality, freedom, and meaning are real, while his philosophy denies them? The answer, from the Reformed perspective, is that the sensus divinitatis can never be entirely silenced. Even suppressed, the knowledge of God breaks through reality. The naturalist knows, at a level deeper than his philosophy, that reality is more than matter — and he cannot do otherwise than live accordingly.

This is not an argument that the naturalist is dishonest. It is an argument that reality itself testifies against naturalism, and that the sensus divinitatis is the channel through which this testimony reaches the human heart, even when the mind tries to suppress it.

Van Til: Presuppositionalism

Cornelius Van Til, the great South African-born Reformed philosopher and apologist who taught at Westminster Theological Seminary, developed these insights into a systematic approach known as presuppositionalism.

Van Til’s core argument is simple but profound: you cannot argue against God without using the tools God has provided. Every attempt to deny God’s existence presupposes the laws of logic — which make sense on theistic grounds because they reflect God’s rationality, but are inexplicable on naturalistic grounds. Every attempt to question the rational order of reality presupposes the rational order of reality, because you use rational arguments to make your case. Every attempt to level moral criticism against God presupposes objective moral values — which are grounded on theistic grounds but are an illusion on naturalistic grounds.

Van Til uses the image of a child sitting on his father’s lap and slapping his father in the face. The child can only slap his father because the father is holding him. In the same way, the atheist can only argue against God because God provides the rational, moral, and experiential framework within which such arguments are possible.

This does not mean the atheist is “really” a theist. It means that reality is theistically structured, and that every attempt to deny this inevitably uses the tools this theistic structure provides. Naturalism is not merely a wrong worldview. It is an impossible worldview — one that cannot be coherently maintained because it undermines the preconditions for its own formulation.

The Unity of the Reformed Insight

Bavinck, Calvin, and Van Til essentially say the same thing from different angles:

• Bavinck: All knowledge presupposes God as its foundation.
• Calvin: Every human being has an embedded knowledge of God that cannot be erased.
• Van Til: Every argument against God depends on the tools God provides.

These three insights, taken together, give us a deep and coherent perspective on the self-destruction of naturalism. Naturalism fails not because Christians want it to. It fails because reality itself — the reality God created — does not fit within the naturalistic framework. And the fact that even naturalists cannot live consistently within their own framework is the strongest testimony to this.

But Arguments Alone Are Not Enough

Yet we must add something here that the Reformed tradition confesses with characteristic honesty. Even though these arguments are sound, even though the testimony of creation is overwhelming, even though reality breaks through the too-small box of naturalism at every seam: arguments alone do not bring a person to saving faith. The reason lies not in the weakness of the arguments, but in the depth of our fall.

Paul writes in Romans 1:20 — a text we have repeatedly cited in this series — that God’s eternal power and divine nature “have been clearly perceived, ever since the creation of the world, in the things that have been made.” But note what he says one verse earlier, in Romans 1:18: “For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth” (ESV). The truth is revealed and suppressed, simultaneously. It is not that the evidence is too vague; it is that the fallen human heart actively resists and pushes away the evidence. The problem is not too little light. The problem is that our eyes are closed.

The Canons of Dort speak about this with pastoral wisdom. In chapters 3/4, articles 11 and 12, the church confesses that God does not work merely externally through the proclamation of the Word, but also internally through the powerful working of the Holy Spirit. The Spirit penetrates “to the inmost parts of man,” opens the closed heart, softens what is hard, and “infuses new qualities into the will.” This internal work is not a gentle encouragement that a person can choose to accept or reject. It is the sovereign, irresistible grace of God that makes the dead alive. Without this work of the Spirit, the clearest argument remains a sound echoing against a closed door.

The Heidelberg Catechism asks in Question 21: “What is true faith?” And the answer is telling: it is “a sure knowledge whereby I accept as true all that God has revealed to us in his Word, and at the same time a firm confidence which the Holy Spirit works in my heart through the gospel.” Faith is not merely the intellectual acceptance of correct propositions. It is knowledge and trust, and both are worked by the Spirit. No series of arguments, however sound, can create this trust in a human heart. It is the Spirit’s work, from beginning to end.

Does this mean the arguments are useless? Not at all. It means rather that we place the arguments in their proper place. The arguments clear the ground, remove the stones and thorns, break open the hard crust of earth. But it is the Holy Spirit who plants the seed and makes it grow. The arguments answer the objections that prevent people from hearing the gospel; the Spirit opens the heart so that the gospel is heard and believed. Our work is to remove the obstacles honestly and carefully. God’s work is to awaken faith.

This is precisely why this series is offered within a congregation and not in an academic lecture hall. We discuss these things as a faith community that prays together, sings together, sits together at the communion table. For we know: the most powerful thing we can do for a seeking friend or family member is not merely to get an argument right, but to pray for them. To pray that the Spirit will open eyes to what creation already proclaims. To pray that the Spirit will soften hearts that have been hardened by years of suppression. We argue and we pray, for we know that both are necessary, and that the final work is God’s and not ours.

And this, brothers and sisters, is not a weakness of our message. It is precisely the depth and the beauty of it. A God who only needed arguments would be a God who stands at a distance — a professorial God who gives lectures and then steps back to see who passes. But the God of the Bible, the God of Dort and of the Heidelberg Catechism, is a God who comes to work in the heart himself. He does not merely remove intellectual obstacles. He makes dead hearts alive. The arguments clear the ground; the Spirit plants the seed. And that is gospel — good news — from beginning to end.

The Bigger Picture: Naturalism and the History of Thought

A Deviation, Not the Norm

Metaphysical naturalism — the conviction that nature is all that exists — is not the “default” position in the history of human thought. It is a deviation — a relatively recent development that gained momentum in the eighteenth and nineteenth centuries and achieved cultural dominance in the twentieth century.

For the vast majority of human history, in all cultures and all periods, people believed that reality is more than the physical. There is a transcendent dimension that grounds, orders, and gives meaning to the physical world. This conviction is not merely a product of ignorance (as the naturalists like to claim). It is the spontaneous response of the human spirit to reality itself.

The rise of metaphysical naturalism in the Western world was not the result of scientific discoveries. As we saw in Session 2, the great pioneer thinkers of modern science — Copernicus, Kepler, Galileo, Newton, Boyle, Faraday, Maxwell — were all theists. Science was not born from naturalism; naturalism later hijacked science and claimed its achievements for itself.

The real driving force behind the rise of metaphysical naturalism was not scientific but philosophical and cultural: the Enlightenment’s emphasis on human autonomy, the European reaction against ecclesiastical abuse of power, the attractiveness of a worldview that frees the human being from divine authority. Nagel’s honest acknowledgment of his own “cosmic authority problem” is perhaps more representative of the real motivation behind much atheism than any scientific argument.

The Cost of Naturalism for Science Itself

There is a deep irony in the relationship between naturalism and science. Naturalism claims to be science’s best friend — that it freed science from the constraints of religion and enabled it to flourish. But as we have seen, naturalism actually undermines the foundations of science.

If naturalism is true, then:

• We have no reason to trust our cognitive faculties.
• We have no explanation for the rational order of the universe.
• We have no explanation for the effectiveness of mathematics.
• We have no foundation for the conviction that reality is knowable.
• We have no explanation for the human drive to seek truth.

Science flourishes not because of naturalism, but in spite of it. Science flourishes because reality is theistically structured — rationally ordered, knowable, mathematically precise — regardless of whether the scientist acknowledges it. The atheistic scientist’s success is itself a testimony to the theistic nature of reality. He discovers the thoughts of God, even if he refuses to call them that.

An Invitation, Not an Attack

We must be careful about our tone here. It is not our intention to attack, insult, or overwhelm naturalists or atheists with academic arguments. We do not want to “win.” We want to serve the truth.

Many atheists and naturalists are honest, intelligent people who sincerely search for truth. They often have good reasons — or reasons they regard as good — for their position. Some have had bad experiences with the church. Some have intellectual objections they want to be taken seriously. Some have simply grown up in a cultural environment in which naturalism is regarded as the “obvious” position.

Our approach is not to condemn these people, but to show that naturalism has a price many of its supporters do not realise — and that the theistic worldview offers a deeper and more coherent understanding of reality. We do this in the spirit of 1 Peter 3:15: “Always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you; yet do it with gentleness and respect” (ESV).

Gentleness and respect. Not self-satisfaction and triumphalism. After all, we ourselves have nothing to boast about. All truth is God’s truth, and if we see it, it is by grace, not by our own cleverness.

Conclusion

What We Have Seen

The distinction between methodological naturalism (the useful scientific working method) and metaphysical naturalism (the philosophical claim that nature is all that exists) is the key. The slide from the one to the other is a logical fallacy that does not survive the test of careful thought.

C.S. Lewis’s Argument from Reason showed that if naturalism is true, every thought in our heads is the result of non-rational physical causes, and that we then have no reason to trust any thought as rational — including the thought that naturalism is true.

Plantinga’s Evolutionary Argument Against Naturalism showed that the combination of naturalism and unguided evolution undermines the reliability of our cognitive faculties. Not evolution itself, but the naturalism attached to it.

Thomas Nagel, an atheistic philosopher, declared that the materialist worldview is “almost certainly false,” and identified the same problems as Lewis and Plantinga — but from an entirely different tradition.

The self-referential problem became concrete in a series of claims about truth, scientism, consciousness, free will, and moral values, each of which undermines the tools needed to assert it.

The theistic explanation for science’s success: the universe is intelligible because it is the work of a rational God; we can understand it because we are created in the image of this God; mathematics describes reality because both are grounded in the mind of God.

The price of strict naturalism is the loss of objective truth, moral values, free will, consciousness, meaning, and human dignity. Almost no naturalist actually pays this price; they rather borrow from the theistic framework.

And the Reformed perspective: Bavinck’s insight that all knowledge presupposes God, Calvin’s doctrine of the sensus divinitatis, and Van Til’s argument that every argument against God uses God’s tools.

The Core Insight

If we must summarise all these arguments in one core insight, it is this:

Naturalism fails not because of what science has discovered. It fails because of what it CANNOT account for: the rationality that makes science possible.

The universe is not merely physical. At its deepest level it is the work of Mind, of the Logos, the Word, the Reason who made all things and without whom nothing was made that was made (John 1:3). The rational order of the universe, the intelligibility of reality, the effectiveness of mathematics, the reliability of our cognitive faculties, the reality of consciousness, the objectivity of moral values: all these things find their foundation in the God who created all things and through whom all things exist.

Naturalism offers a reality that is too small. It tries to press the full richness of human experience into a box that is too small, and at every seam reality breaks through. Christian theism, with its doctrine of a rational Creator, the Imago Dei, and the Logos who became flesh, offers a framework large enough for the full reality: the physical and the spiritual, the scientific and the moral, the rational and the personal.

A Bridge to Session 8

If naturalism fails and theism offers a better foundation — not only for faith but for science itself — how then do we hold science and faith together in practice? How does a believer read scientific research? How do we distinguish between data and interpretation? How do we live with open questions without surrendering either our faith or our intellect?

These are the questions Session 8, the final session of this series, will wrestle with. We return to the beautiful image of the Belgic Confession: two books, one Author. The book of nature and the book of Scripture. And together we discover how to read both with joy, honesty, and wonder.

For that is ultimately where this entire journey brings us: not to a feeling of intellectual superiority, not to a sense that “we have won,” but to wonder. Wonder at a universe created by Mind. Wonder at a God who made us in His image so that we can think, discover, and stand amazed. Wonder at a reality so rich and so deep that no single discipline can encompass it alone.

The Psalmist knew this long before us:

Psalm 8:3-4 — “When I look at your heavens, the work of your fingers, the moon and the stars, which you have set in place, what is man that you are mindful of him, and the son of man that you care for him?” (ESV)

Let us walk the final part of this journey together, with open eyes, open hearts, and a wonder that only grows the more we see.