Losing Moral Knowledge
Some philosophers—including Gilbert Ryle, Ronald Dworkin, and Thomas Nagel—have held that there are important respects in which our cognitive relationship to morality is more secure than our cognitive relationship to ordinary empirical knowledge. I defend the claim that moral knowledge is susceptible to being lost in the same ways in which non-moral knowledge is, including by being forgotten and by being debunked. I offer a novel solution to Ryle’s puzzle about “forgetting the difference between right and wrong.” The chapter raises, and suggests answers to, a number of underexplored questions, including questions about the extent to which some cases of moral corruption are best understood as cognitive processes (i.e. processes involving a loss of knowledge), as well as questions about the kinds of considerations that could in principle make it reasonable for us to lose confidence even in moral claims that strike us as obviously correct.