Reply #86: Alas, I don't know.

[Lyric]

And so far as I understand it, it's not a scientific theory that he's researching or studying--he's a petroleum geologist, not an anthropologist or a biologist--so of course it's not peer-reviewed-journal worthy. But I also assume that, because he's not a blathering moron and is in fact a pretty educated, smart guy, he must have at least *some* evidence that led him to this idea.

As for the "no record" of any such bottleneck--IS there no record? I know there have been cataclysmic events in the past, but I have noooo idea about timelines or dates in terms of the ancient humans who were involved. I am no scientist--just a student who heard an interesting story and thought it worth repeating in the context of this thread.

Now I'd like to go e-mail him and ask him, as I hadn't really thought about any of this until this thread reminded me of it.

Edit: Sorry--he's a petroleum geologist. I went and looked it up to be sure--I knew it started with a "p", lol.