The Bell Curve is a good, well-written book. Harvard. Charles Murray has published two more like it lately; I have them both and am looking forward to reading them. It does indeed show that blacks are fully 15 points lower on the IQ curve than whites, on the average; and Jews are 15 points higher than other whites. All of which certainly explains a great deal about the world as it is . . . .
I don't know why you keep referring to Sowell in the past tense; he's alive and writing, though he is 91. Kissinger is rising 100 and
he's still writing too --- people live longer these days, at least if Covid doesn't get 'em.
Thomas Sowell is certainly an economist and perhaps he simply wanted to be an economist, not a race-monger like so many blacks. I respect that. I used to read all John McWhorter's books and audiolectures, could not BELIEVE he was black (no accent, very scholarly about linguistics, nothing about ebonics or any black stuff), had to look him up on Bing before I believed it. He must have been brought up by white parents; or is just very good at languages, which would certainly figure, considering his field. But lately they've scooped him up, too and he's started to write books about race. Though McWhorter does fight back against the leftwing race, race, race crap so many blacks put out. He has a new book out this very month and I've preordered it: