Abstract

Alvin Plantinga titles the closing chapter of his book Warrant and Proper Function "Is Naturalism Irrational?" He answers that it is. More precisely, he claims that anyone who is aware of the epistemological argument that he presents in this chapter has an unavoidable reason to doubt the combination of naturalism (according to which there is no God as conceived of in traditional theism) and evolutionary theory (according to which our cognitive capabilities are the products of blind processes operating on genetic variations). But then, he says, anyone who still accepts these propositions is irrational because it is irrational to accept a belief for which one knows there are unavoidable reasons to doubt.