Norms, not moral norms: The boundaries of morality do not matter.

We endorse Stanford's project, which calls attention to features of human psychology that exhibit a "puzzling combination of objective and subjective elements," and that are central to cooperation. However, we disagree with his delineation of the explanatory target. What he calls "externalization or objectification" conflates two separate properties, neither of which can serve as the mark of the moral.