Abstract

This chapter develops and defends two probabilistic knowledge norms of action. The first is a knowledge norm for reasons, namely that you may treat a probabilistic content as a reason for action if and only if you know it. This norm can help explain intuitive judgments about rational action. It can also help us rethink alleged instances of pragmatic encroachment often cited as challenges for existing knowledge norms of action. The second norm defended in this chapter is a knowledge norm for decisions. According to this norm, an action is permissible for you if and only if it is considered permissible for an agent with imprecise credences whose beliefs exactly match your probabilistic knowledge. This norm provides a precise interpretation of the controversial view that standard decision theory cannot guide decisions about transformative experiences, where this interpretation succeeds in answering a wide range of recent objections to this view.