In my prior post, I explored the notion that moral realism is not as pragmatically attractive as it presents itself when its proponents are comparing it to opposing systems. I would now like to take up another narrow topic in the discussion of morality—the notion that moral realism must be true for the opposite of the reason that others feel cultural relativism must be true: while some relativists feel that cultural differences demonstrate the lack of objective moral truth, some realists feel that morality must be objective and real because all people across the world, and throughout history, have held certain values in common.
Well, in response, first, I would recommend reading my initial article in this series, on how some basic aspects of what we call morality are necessary features of our evolutionary past, but not ‘objective’ in the desired sense. But second, and more importantly, I would seek to show that this argument for moral realism and the opposite argument for cultural relativism actually fail for the same reason.
Cultivating Moral Humility: