Now the elephant in the room is, do all the races have exactly the same IQ distribution amongst their population? Test results say no. Need citation? Just look up anything, SAT, GRE, MCAT, police dept entrance exams, fireman exams, military exams, straight IQ tests, anything. The body of evidence is overwhelming.
The body of evidence is overwhelming. IQs have been steadily rising over the past century. The phenomenon even has it's own name: The Flynn Effect.
It seems that for the population as a whole, nurture and not nature has a strong effect on IQ. We have some indications of what that "nurture" may be - nutrition, education, household stability, etc.
So lets not jump on the "some races are naturally dumb" bandwagon quite yet, until we even out the nurture part.of the equation. Until we eliminate food insecurity in poor households, until an inner city school is just as good as a private school, until we've brought livable incomes to all, we should not and can not excuse the problem by saying some races just don't have what it takes.
We need to fix our society, because as it happens, we've set up a class of people (which partially correlates to some racial groups) to more likely fail than succeed. And that's a drain on the present and the future.