Hume and Induction: Merely Cognitive Psychology?

Abstract:The purpose of Hume’s argument about induction, contra “literalist” interpretations that see it merely as psychology, is to show that induction cannot be justified. Hume maintains that the only way to justify induction would be to demonstrate or to produce a good inductive argument for the uniformity principle (UP). His most famous point is that any attempt to justify UP inductively would be circular. One may retort that no inductive argument can be circular, for a circular argument must be deductively valid. But there is a sense in which a purely inductive argument for UP is circular: it uses induction for the purpose of justifying induction. Therefore, the literalist interpretation cannot be right. For if the argument can be circular only if its purpose is to justify induction, and Hume has shown that it is circular, then its purpose must be to justify induction, and Hume shows that this cannot be done.