Peirce and the Logic of Fallibilism

Abstract

Some recent defenses of fallibilism have sought to reconcile the claim, 'i know that "p"', with the claim that one might nevertheless be in error. i argue that this cannot be done. the logic of fallibilism requires that 'i know that "p"' be replaced with 'i "believe" that i know that "p"'. in that case, one is not asserting the possession of justified true belief, but only of justified belief, which alone allows consistently for the possibility of error.