This is something which I have been curious about for a long time: if, somehow, all human beings along with all man-made objects on earth have vanished and a new generation of human beings of the same genetic make-up were to be born into the same (but now bare) earth (which, I guess, is an interesting question on its own: is this possible?), would the 2012th year of that world resemble our world now? Would the international relations, political systems, development of science and technology, and human morality(/moralities) be similar?
I think that once we know an answer to this, the debate on moral relativism and objectivism might be able to near a conclusion, although I don't quite know how. What if that new world is exactly the same as ours - so that morality differs across and within cultures, so that people across the world have not agreed on universal moral truths? Does that mean that we will then be forced to endorse relativism as the truth? Or would we just run into the same dispute all over again?