[Natfan]

so geographical region of birth dictates intelligence? how intriguing.

i would like to know if that child was fed well, provided with shelter and given a good education -- would it still be, in your words, "not possible" for them to break even 100IQ?

[0xy]

I didn't claim that, this appears to be a strawman. I specifically stated average IQ, and yes, necessarily your region of birth does inform your average IQ.

Environmental and educational impacts on IQ are very minimal. Someone with an average Sierra Leone IQ is not becoming a genius after world-class education and the best environment possible. They'll be measurably improved, but not by 50 IQ points.

[tptacek]

your region of birth does inform your average IQ.

I doubt you can demonstrate this empirically, because there is no such thing as a regional survey of average IQ.