 The claim that the unity of consciousness requires self-consciousness can be criticised in a number of different ways. How one evaluates the claim will depend on whether one has conceptual or non-conceptual self-consciousness in mind. As Bayne (2004) points out, the claim that the unity of consciousness requires that one possess the concept of oneself seems, implausibly, to imply that conceptually unsophisticated infants and non-human animals could not possess a unified stream of consciousness (of course, this worry applies quite generally to views that connect consciousness with self-consciousness). The view that non-conceptual self-consciousness is a necessary condition of the unity of consciousness would appear to be vulnerable to the objection that it implausibly rules out the possibility of cases such as Anscombe’s (1975) subject in a sensory deprivation tank, a case in which the forms of experience typically classed as forms of non-conceptual self-consciousness are lacking (for related cases see Bayne 2004; also see G. Strawson 1999). A different worry about the connection between self-consciousness and the unity of consciousness is the “just more content” objection (B. Williams 1978: ch. 3; Hurley 1994; and 1998 Part I). The concern is addressed to the view that self-consciousness is not merely a necessary condition of the unity of consciousness but is that in virtue of which it is unified. For if the self-ascription of experiences is taken to be that which is responsible for the unity of consciousness, how can we account for the fact that the self-conscious thoughts are themselves unified with the first-order experiences that they supposedly unify? As Hurley puts it, 