I heard it's preference for non-physical work (lawyers, doctors, bankers, artists, writers...). Also, an old Polish novel "Lalka" by Bolesław Prus says Jews hav

I heard it's preference for non-physical work (lawyers, doctors, bankers, artists, writers...). Also, an old Polish novel "Lalka" by Bolesław Prus says Jews have an admiration for intellect and charades is one of their favorite family past-times.