Knowing something about evolutionary psychology might contribute something to understanding the revenge culture in which Orestes finds himself in Aeschylus’s Oresteia, and so why he feels pulled both to avenge his father’s murder by his mother Clytemnestra, and also feels horrified at the prospect of killing his mother in cold blood. But none of that can be, would be, at all helpful to Orestes or anyone in his position. Knowing something about the evolutionary benefits of altruistic behavior might give us an interesting perspective on some particular altruistic act, but for the agent, first-personally, the question I must decide is whether I ought to act altruistically and if so why. I cannot simply stand by, as it were, and “wait” to see what my highly and complexly evolved neuro-biological system will do. “It” doesn’t decide anything; I do, and this for reasons I must find compelling, or at least ones that outweigh countervailing considerations. It is in this sense that the first-personal perspective is strictly unavoidable. I am not a passenger on a vessel pulled hither and yon by impulses and desires; I have to steer."
Robert Pippin, Normative and Natural