The Importance of Social Morality

I don't know how you say that there are certain objective moral facts that exist independently of the human mind that, that are binding upon us. Because even if you say they're evolutionarily infused, okay, well, once I realize that as a rational creature, then why am I bound to obey what evolution has infused? Why not? Harris sees some philosophers talk of strict private morality as akin to unproductive discussions of private personal physics. So this is Harris's response. Social morality exists to sustain cooperative social relationships and morality.