A very interesting if controversial theory. Doesn't seem like there is enough direct evidence yet to change the paradigm but it at least seem worth investigation.

Note: After a little more investigation the counter arguments seem to be a little more solid. Although I would still be interested to hear from a professional what kind of investigation/discussion has been done regarding the AAT.

I have to say I have a bit more respect for him now. He's a good speaker and the speech is good, although he doesn't say anything which is particularly revolutionary.