Abstract

Foundationalist, Coherentist. Skeptic etc., have all been united in one respect—all accept epistemic justification cannot result from an unending, and non‐repeating. chain of reasons. Peter Klein has recently challenged this minimal consensus with a defense of what he calls “Intinitism”—the position that justification can result from such a regress. Klein provides surprisingly convincing responses to most of the common objections to Infinitism, but I will argue that he fails to address a venerable metaphysical concern about a certain type of regress. My conclusion will be that until Klein answers these metaphysical worries he will not have restored Infinitism as a viable option in epistemology.