[exporectomy]

Not at all. There's a lot of research into the causes of black/white inequality and IQ differences. It's nowhere near as conclusive as you suggest. This is not phrenology so your comparison to that is an unproductive straw-man.

Where's the evidence that there is no significant inherent biological such as genetics? Just because it's a popular belief doesn't mean it's strongly supported by evidence. I haven't seen any. I even saw an adoption study that attempted to answer that, and when it embarrassingly turned out that black kids still had lower IQs despite their white adopted families, the authors suddenly discovered they'd forgotten to control for age at adoption and that must surely have been the cause of the differences. They were silent on the effect of the race of the biological parents even though it could be clearly seen in the data that the more black biological parents a child had, the lower his IQ despite the race and income of his adopted parents.