Abstract

In a recent series of papers, Timothy Williamson argues that one can reach Edmund Gettier’s conclusion that the justified-true-belief (JTB) theory of knowledge is insufficient for knowledge by constructing Gettier cases in the framework of epistemic logic. In this paper, I argue, however, that Williamson’s Gettier cases in the framework of epistemic logic crucially turn on an assumption that the JTB theorist can plausibly and justifiably reject. In particular, I argue that it is rational for the JTB theorist to reject Williamson’s preferred epistemic accessibility relation in favor of one for which Gettier cases in epistemic logic do not arise. Thus, I conclude that Williamson’s Gettier cases in epistemic logic do not genuinely threaten the tripartite theory of knowledge.