Gareth Evans, "Understanding Demonstratives"

Evans has multiple projects in this paper. First is a reply to Perry's criticism of Frege on Demonstratives that involves denying that Frege is limited to descriptive senses. Evans thinks that Perry's argument requires the assumption that Frege is only entitled to such senses. Second, Evans sketches a view of object-dependent, non-descriptive Fregean senses in order to make good on his claim that Frege is entitled to such things. Third, Evans introduces the notion of a dynamic thought, which can persist through changes in time and linguistic expression. Fourth, Evans claims that Perry's account of the objects of the propositional attitudes (roughly, Russellian propositions apprehended under linguistic roles) is just a "notational variant" of Frege's proposal (or the proposal that Evans attributes to Frege). Fifth, Evans says that we need to embed our understanding of "ways of being presented" with an object in a general theory of thought, which will explain the special way subjects apprehend themselves in first-personal thought, or how they think about time, or about a place. Perry, he claims, fails to give such an account when he claims that the linguistic, token-reflexive rule governing uses of "I" or "here" or "now" gives us a way of thinking about how the objects these terms pick out are presented to us.