Higher-Order Evidence

Abstract

Abstract Chapter 10 explores a puzzle about epistemic akrasia: if you can have misleading higher-order evidence about what your evidence supports, then your total evidence can make it rationally permissible to be epistemically akratic. Section 10.1 presents the puzzle and three options for solving it: Level Splitting, Downward Push, and Upward Push. Section 10.2 argues that we should opt for Upward Push: you cannot have misleading higher-order evidence about what your evidence is or what it supports. Sections 10.3 and 10.4 defend Upward Push against David Christensen’s objection that it licenses irrational forms of dogmatism in ideal and nonideal agents alike. Section 10.5 responds to his argument that misleading higher-order evidence generates rational dilemmas in which you’re guaranteed to violate one of the ideals of epistemic rationality. Section 10.6 concludes with some general reflections on the nature of epistemic rationality and the role of epistemic idealization.