Steve Sailer: What if Charles Murray is right?

Steve Sailer writes:

Vox recently ran a long article by three professors entitled “Charles Murray is once again peddling junk science about race and IQ.” It was full of bluster about how “There is currently no reason at all to think that any significant portion of the IQ differences among socially defined racial groups is genetic in origin.”

But if you read the long article closely, you’d have discovered that what it was really about was how Murray is right and the conventional wisdom is wrong on (at least) 80 percent of the scientific issues.

(…)

In this essay, though, I want to consider the implication of what few seem to take seriously: What if the Arthur Jensen–Charles Murray line of speculation is wrong, and their finest scientific critic, James Flynn, turns out to be right that white-black differences in cognitive performance turn out to be due to what we might call a cultural cascade?