Epistemic Problems of Moral Testimony
This chapter discusses various arguments emphasizing epistemic problems with accepting moral testimony. It is often thought that there are various barriers that prevent a hearer from acquiring knowledge of moral truths on another person’s testimony. This chapter argues that none of these barriers are insurmountable. Although there indeed are various pitfalls to accepting testimony, none are peculiar to accepting moral testimony. In particular, it is possible to identify people who already have moral knowledge even if you yourself lack this knowledge. To do this, you need a theory of error—that is, some grasp of why another person might be better positioned to know moral truths than you yourself are. Armed with such a theory, it becomes possible to acquire moral knowledge through testimony.