In America we have the impression today that many Jewish-Americans are pretty smart. They are doctors, lawyers, mass media and political puppet masters. That's because the Einsteins tended to get away. It was more of the slum dwellers that didn't fare so well. Likely evidence exists of a slight but measurable IQ boost among the surviving Jews compared to those alive before WWII. Jewish persecution driven by envy has been going on many thousands of years and today Jews disproportionately win Nobel science prizes. From a genetics standpoint WWII possibly precipitated the biggest measurable advance in human intelligence in 100 years.
What you gave the example of Einstein was of a German Jew. The largest percentage of Jews was in Central Europe and those, including the smart ones were slaughtered.
Also, jewish-Americans are mostly descendents of those who left before the holocaust -- in the late 1800s and early 1900s due to Russian pogroms
i'm still not convinced of your point of a genetic leap, but tell me more -- I like this debate. I would want to see some kind of proof. Maybe we can fix this on WWII for Jews in Germany? Or a more recent war -- say the Korean? Do you have any statistics for any war?