I wish to defend a functionalist approach to the mind-body problem. I use the word ‘functionalist’ with some reluctance, however; for although it has become the conventional label for the sort of approach taken by such philosophers as H. Putnam and D. C. Dennett, I believe it is somewhat misleading. The functionalist, as I understand him, tries to show how there can be machine analogues of mental states and then argues that just as we are not inclined to postulate an ontological dualism between simulated mental states and the machine's physical states, we need not postulate a dualism between mind and body. The functionalist also argues, however, that it is wrong to identify the mental states or simulated mental states with the physical states.
Recently functionalism has come under attack, first for not being a coherent alternative, and secondly for not being able to provide an adequate account of sensations. I believe that the first objection is misguided and shall deal with it in section I. However, I agree that functionalists have not provided an adequate account of sensations, but I shall try to help remedy this in section II.