Once again Occam's butterknife is spotted in the wild. Richard Lynn, call your office: http://en.wikipedia.org/wiki/IQ_and_the_Wealth_of_Nations
Wow, this thread just became some kind of magnet for racists, didn't it. Since you are apparently very proud of your IQ, perhaps you can read the actual article and try to comment on something related to the article's substance, and not just give us a knee jerk reaction based on the title.
Why shouldn't it be the null hypothesis that genetic diversity is the cause of global inequality? Human beings have been thinking about this subject for a lot more than the last 50 years, you know. All I think is what more or less everyone used to think - since when Jesus was a little boy. If that's not a null hypothesis, what is?
So, from my perspective, the OP is like a long, vague explanation of how stress causes ulcers or marsh miasmas cause malaria. It's impossible for any such analysis to be any more cogent than any other - all are equally wrong.