"do the math"? I would say I most closely subscribe to descriptive relativism, as the article describes it. But saying that's just "an empirical observation" is silly. The fact that different people and different societies have different moral values (or choose to subscribe to some of the ones laid out in society, but not others), is my whole, entire point.

The problem I have with this is: it doesn't define society, it doesn't define morality, and it uses the most extreme examples for morality to prove its point (i.e. things which we all find utterly repugnant, like slavery and rape). What about issues like abortion and euthanasia, which still divide our society roughly down the middle? Is there a clear moral right or wrong here? And if so, why? I have my beliefs, and I feel that I am right in them, but I respect other people's right to arrive at a different conclusion.