In Chapter 6 we saw that the scope of traditional content externalism seemed to be quite narrow. In particular, two central features of the mental seemed untouched by the arguments for content externalism. The first of these, cognitive processes and the architectures that underwrite them, were discussed in Chapter 9, where it was argued that a suitable extension of externalism - from content to vehicle externalism - would underwrite the externality of cognitive processes and architectures. The second feature of the mental arguably untouched by the arguments for content externalism is consciousness, and this is the subject of this chapter.