 If consciousness cannot be reduced to self-consciousness, perhaps the latter is nevertheless a necessary condition of the former. Some non-reductive views, already mentioned, see pre-reflective consciousness (see  §3.2),  or the sense of ownership (see  §3.3)  as necessary conditions of consciousness (see Zahavi 2005). A different non-reductive, and broadly Kantian, argument for the claim that self-consciousness is a necessary condition of consciousness first of all claims that conscious experience is necessarily unified and, second, that this unity of consciousness in turn depends on self-awareness. Of primary interest here is the second step which is articulated by Strawson in his discussion of Kant’s transcendental deduction as the claim that, 