In the previous two chapters, I have set out McDowell’s account of perception in Mind and World – and the consequences it has for a metaphysical picture of the nature of reality – and of action hinted at in Mind and World and developed subsequently. The two chapters are complementary insofar as they discuss what might intuitively be described as “inputs” to and “outputs” from cognition but in both cases what is described – perception and action – is saturated with concepts. So to the extent that the intuitive picture of inputs and outputs holds, it is not a matter of input from outside the conceptual to the realm of conceptually mediated thought and then output to the extra-conceptual again. On McDowell’s picture, the conceptual realm has no outer boundary. Both perception and action are themselves conceptually structured.