From The Moral Animal:
"One might think that, being rational creatures, we would eventually grow suspicious of our uncanny long string of rectitude, our unerring knack for being on the right side of any dispute over credit, or money, or manners, or anything else. Nope. Time and again--whether arguing over a place in line, a promotion we never got, or which car hit which--we are shocked at the blindness of people who dare suggest that our outrage isn't warranted."
Sometimes, the truth hurts. Evolutionary psychology is an explanation for biases, but it need not be used as a rationale.
