When you share your moral common sense with people in your locality, that helps you to form a community. But those gut reactions differ between groups, making it harder to get along with other groups.

When there is a conflict, which group's sense of right and wrong should prevail? If a morality is a system that allows individuals to form a group and to get along with each other, then the challenge is to devise a system that allows different groups to get along - what I call a meta-morality.

Since functional brain imaging first emerged, we have learned that there aren't very many brain regions uniquely responsible for specific tasks most complex tasks engage many if not all of the brain's major networks. So it is fairly hard to make general psychological inferences just from brain data.

Utilitarianism is inherently pragmatic - in fact, I prefer to call it deep pragmatism. Humans have real limitations, obligations, and frailties, so the best policy is to set reasonable goals, given your limitations. Just try to be a little less tribalistic.