 Arguments such as Perry’s might be challenged on the grounds that it is not possible to rationally doubt that one is the subject of these conscious states, where that formulation involves an “introspective demonstrative” picking out one’s current conscious states. This, it might be claimed, constitutes a reduction of first-person content (cf. Peacocke 1983: ch. 5, although his goal is not reductive). Even if it is true, however, that one cannot doubt that one is the subject of these conscious states, it is not clear that this poses a significant challenge to Perry’s argument for the essential indexicality of the first-person. For one thing, the content itself contains a demonstrative, so indexical, element. Second, it has been argued that our capacity to refer to our own experiences itself depends on our capacity to refer to ourselves as ourselves (P.F. Strawson 1959: 97; Evans 1982: 253). That is, to think of these conscious states is to think of them as these conscious states of mine. If to demonstratively think of one’s conscious state is, necessarily, to think of it as one’s own conscious state, then the purported reduction of first-person thought to thought not containing the first-person will fail.