It's a reference to the notion that Ashkenazi Jews have an average IQ of something like 105, so have more 140+ IQs, and as such they are disproportionately repr

It's a reference to the notion that Ashkenazi Jews have an average IQ of something like 105, so have more 140+ IQs, and as such they are disproportionately represented in Nobel Prize winnings in the 20thC. Etc etc. I won't source for them (theres a Wiki article) since I think most of the variance can be accounted for by culture.