Evolutionary Debunking

Recent literature has paid considerable attention to evolutionary debunking arguments. But the cogency of evolutionary debunking arguments is compromised by a problem for such arguments that has been somewhat overlooked, namely, what we may call ‘the demarcation problem.’ This is the problem of asking in virtue of what regulative metaepistemic norm evolutionary considerations either render a belief justified, or debunk it as unjustified. In this paper, I present and explain why in the absence of such a regulative metaepistemic norm any appeal to evolutionary considerations (in order to justify or debunk a belief) is bound to be ad hoc and question-begging and, therefore, ultimately unjustified.