[QUOTE=Bricker]
True. But I can point to all sorts of evidence that our society has adopted the moral rule of “It’s Wrong To Kill Each Other.”
You, on the other hand, cannot point to anywhere near the same kind of persuasive evidence that our society has adopted the moral rule of “Don’t Have 18 Kids On Grounds Of Unfair Distributive Justice.”
In short, you’re claiming a moral rule that doesn’t exist. I can with equal authority say there’s a moral rule of “Mind Your Own Damn Business.” In fact, I can probably rustle up MORE objective evidence in support of the adoption of that moral rule than you can yours.
[/QUOTE]
Well, my reply to you was badly stated, in that it implied a commitment to relativism, which I do not advocate. A better statement of my position is in post 296: if a moral claim is supported by the best reasons, then it is one we ought to recognize, even if people in fact don’t recognize it. To give a cliched example, in 1830 there were good reasons to regard slavery as immoral even if as a matter of fact most people didn’t recognize those reasons.
As I said, for reasons related to the tragedy of the commons and the free rider problem in economics, there are good reasons to regard overuse of resources as wrong, even if as a matter of contingent fact many or most Americans don’t recognize that owning a McMansion or having 18 kids is wasteful of resources (i.e., they don’t recognize the factual claim) or don’t know that wasting resources is wrong (i.e., they don’t recognize the moral claim).