Abstract

Timothy Williamson has offered a novel approach to refuting external world skepticism in his influential book, Knowledge and Its Limits. The strategy employed by Williamson is to show that skeptics falsely attribute too much self-knowledge to the epistemic agent when they claim that one’s evidence is the same when in a “good case” as it would be in a similar “bad case.” Williamson argues that one’s evidence is not the same in a good case as it would be in a bad case. My contention is that Williamson’s account fails. In order to make his case against skepticism, Williamson must attribute an overly strong conception of evidence to the skeptic, which can be avoided by appealing to a phenomenal concept of evidence. Thus, a different approach must be taken to avoid skeptical consequences.