dhw: Put all these perhapses and theories and hypotheses and don't-knows together, and it sounds to me like a pretty good case for agnosticism!-Of course no one knows the answers. That is why agnosticism is a refuge from the debate. Most debates declare a winner. In timed sports events that play to a tie, there is overtime to try for a winner. No one likes a tie result. Agnosticism is a tie result. But it is an honest position.