> This universe, as far as we know, couldn't contain an omnipotent being. It can always be reduced to the silly, "If God can do anything, can he make a rock so heavy that he can't lift it?"

The general opinion is that, in caes like this, the question becomes irrelevant. The attempt here is to catch God in a semantic loop; we construct something that is logically impossible (a self-contradiction) and attempt to say "See? See? od's not so great after all." But the impossibility occurs on the human side alone; the failing lies not with God, but with human understanding and expression.