Excellent point.
Thank you! Plenty of sensible people - Thomas Sowell, for example - have responded to Dr. Murray’s work. It’s been mentioned, among other points, that his IQ data is a snapshot of a moving target, rather than the etched-in-stone destiny of billions. It’s been observed that instruction, diligence, and so on are highly influential, in addition to basic intellectual capacity.
I understand that Dr. Murray doesn’t argue with any of this. He wasn’t trying to say what both his ignorant critics and some of his “supporters” claim he said.