Snail, I didn't say you were confused, you know that. I was in fact indirectly commenting on the links, which seem to consist of educated conjectures based on statistical correlation. Perhaps you were hoping I'd say they were all wrong.. The rest I have already answered in my previous post.

MGr, your rationality is like a breath of fresh air, though you've obviously never been landed on by a bungy jumper I'll wager.