David Lewis (1941-2001) was Class of 1943 University Professor of Philosophy at Princeton University. His contributions spanned philosophical logic, philosophy of language, philosophy of mind, philosophy of science, metaphysics, and epistemology. In On the Plurality of Worlds, he defended his challenging metaphysical position, "modal realism." He was also the author of the books Convention, Counterfactuals, Parts of Classes, and several volumes of collected papers.

In his justifiedly famous paper, “Elusive Knowledge” (Australasian Journal of Philosophy, 74:4, 1996), David Lewis presents a contextualist account of knowledge, which, like other contextualist accounts, depicts sceptical claims as involving application of a higher standard of knowledge than is applied in everyday ascriptions of knowledge. On Lewis’ account, the sceptic’s denials and the everyday ascriptions are made in different contexts, which allows them both to be true. His account gives detailed specification of how contexts are to be determined. My (...) paper points out that this view is unattractive to the sceptic, since it makes scepticism, even if true, completely disconnected from and irrelevant to the rest of our cognitive discourse. After arguing that the sceptic’s own ascriptions of knowledge (made outside the philosophy seminar room) can be explained in non-contextualist ways, I expound and criticise Lewis’ analysis of knowledge, taking up in particular a central component of his account, the “Rule of Attention”. In the central part of the paper I argue that the reasons given for the inclusion of the rule are all inadequate, and also that there are positive reasons for rejecting it. The final section of the paper argues that the excision of the Rule of Attention removed would leave Lewis’ account subject to serious counter- examples. (shrink)