Polymaths

These folks know a little about everything, or think they do; most claim to be self-taught, as getting additional doctoral degrees takes an additional half a decade. Bother them frequently, because they are probably full of shit or else you probably know them as your university professor. Only applies to sciences, not languages or arts; a polymath would still be considered a genius even if they never though another language was worth learning and couldn't draw a stick figure using adobe illustrator.