Knowing That One Believes Without Knowing That One Knows

Abstract In recent epistemology, introspection principles are commonly rejected. One of the central reasons for this is the adoption of Williamson’s anti-luminosity arguments (1996, 2000) and the popularity of the associated epistemic externalist position. This rejection, however, comes with theoretical costs concerning the applications of introspection principles in epistemic and doxastic logic and modeling cooperative behavior. In this paper, I provide a way to solve this dilemma by arguing that the principle KB – expressing one’s privileged knowledge of their beliefs – remains unscathed by Williamson’s argument while saving the important theoretical applications introspective principles are used for. I propose a way of justifying KB and rejecting KK on principled grounds using Byrne’s (Byrne, A. (2005). ‘Introspection.’ Philosophical Topics 33(1), 79–104., Byrne, A. (2018). Transparency and Self-Knowledge . Oxford: Oxford University Press.) transparency account of introspection, improving upon a previous attempt by Das and Salow (Das, N. and Salow, B. (2018). ‘Transparency and the KK Principle.’ Noûs 52(1), 3–23.). This defense of KB, unlike many in the literature, is consistent with epistemic externalism and allows one to reject the problematic KK principle and maintain that non-introspective knowledge is guided by Williamson’s margin-for-error principle.