Well that IS a legit question, and scientists FOUND that answer less than a decade ago, but it's such a hot potato that they don't talk about except in academic journals.
what I'm about to tell you is now uncontroversial among scientists and hasn't been disputed by ANY scientist for years:
Ready?
According to about two dozen recent studies published in many respected, objective, serious, peer-reviewed, academic journals; MRI analyses using standard volumetric medical software have proven conclusively that blacks, everywhere in the world, average 5% smaller brains than whites, and 6% smaller than Asians.
No, it's not the environment. The deficit is seen in embryos just weeks old. It's seen in all countries, and is independent of what the mother eats/drinks/does.
Nor is it body size: Asians (even ones in Indochina who've been half-starved all their lives) have the largest brains and the smallest bodies.
Nutrition? The average deficit in cerebral volume exists in well-fed subjects.
The results have been duplicated many times all over the world at MANY universities measuring thousands of different brains of (well-nourished) people and verified three completely different ways (like brain weight at autopsy).
It is not due any of the other OBVIOUS excuses you want to believe, either. You think those simple explanations didn't occur to university researchers who do statistical analysis for a living?
If you're curious about how such a horrible thing could be true,the reason is that the first humans were African blacks, and whites/Asians evolved from the ones who left Africa 80,000 years later. The winter freezing allowed only the smart ones to survive.
Say, you think this might explain blacks' average IQ of 80 in America, 70 in Africa, and 60 in Ethiopia? And no, the IQ tests aren't biased either. They're the same internationally-used, culturally-neutral oral tests used all over the world, and all the liberal sociologists say the tests are culturally neutral. (Example: show a square, a triangle, and a circle and ask
So did I get all this from the KKK?
No! From the journal of that Liberal bastion, the American Psychological Association:
http://psychology.uwo.ca/faculty/rushtonpdfs/PPPL1.pdf
But it didn't make the nightly news even though it should. You non-autistics just go ahead and believe whatever the hell you want to believe. You pretend your lies are true and then attack the Unbelievers.
Y'all make me SICK!
I'm glad I live alone and naked in a cave.
--faye kane homeless brain
http://tinyurl.com/fayescave