Abstract

Plantinga claims to give a person who is agnostic about the ultimate source of his cognitive faculties an undefeatable defeater for all his beliefs. This argument of Plantinga’s bears a family resemblance to his much better known argument for saying that naturalism is self-defeating, but it has a much more ambitious conclusion. In the present paper, I try to show both that Plantinga’s argument for this conclusion fails, and that even if an “origins agnostic” were to succumb to it, a cure for his skepticism is ready at hand—one that does not involve believing in anything like God.