The claim that ethnic uniformity leads to cultural excellence is as wrong as an idea can be. There’s a reason we refer to unsophisticated things as provincial, parochial, and insular and to sophisticated ones as urbane and cosmopolitan. No one is brilliant enough to dream up anything of value all by himself. Individuals and cultures of genius are aggregators, appropriators, greatest-hit collectors. Vibrant cultures sit in vast catchment areas in which people and innovations flow from far and wide.
