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The word “you” refers to a unique particular person, depending on the conversational context in which it's uttered; in particular, it is decided by the individual one is addressing. Other context-sensitive terms are gradable adjectives like “tall”—how tall something must be to depend as “tall” depends on the conversational context—and quantifiers like “everyone”—which individuals count as a half of “everyone” depends on the conversational context. Contextualists about “knows” assume that this verb belongs on the list of context-sensitive phrases. A consequence of contextualism is that sentences containing “knows” may categorical distinct propositions, depending on the conversational contexts by which they’re uttered. This function allows contextualists to supply an efficient, although not uncontroversial, response to skepticism. For a more thorough overview of contextualism and its bearing on skepticism, see Rysiew 2011 or Ichikawa forthcoming-b. Create New Content The most obv...