QUOTE : I don't think highly of the theoretical or explanatory power of of the theory of evolution. But I think that an evolutionary approach to biological problems is inescapable, and also that in so desperate a problem situation we must clutch gratefully even at a straw. So, I propose, to start, that we regard the human mind quite naively as if it were a highly developed bodily organ, and that we ask ourselves, as we might with respect to a sense organ, what it contributes to the household of the organism.