American political and social life today is pretty much one great big Q.E.D. for the two main theses of The Bell Curve, Charles Murray argues:
Those theses were, first, that changes in the economy over the course of the 20th century had made brains much more valuable in the job market; second, that from the 1950s onward, colleges had become much more efficient in finding cognitive talent wherever it was and shipping that talent off to the best colleges. We then documented all the ways in which cognitive ability is associated with important outcomes in life — everything from employment to crime to family structure to parenting styles. Put those all together, we said, and we’re looking at some serious problems down the road.