Some years ago some TV show found presumably "the smartest man in Denmark". The title is disputed, obviously. Turns out he's basically some redneck type person

Some years ago some TV show found presumably "the smartest man in Denmark". The title is disputed, obviously. Turns out he's basically some redneck type person who tinkers in his workshop, never held a job, just sells inventions/solutions to people who comes around asking for them. He put no value on IQ, but admitted that it might be what allows him do make a small living of his tinkering. Then there's my wife's co-worker, member of Mensa and self-proclaimed intelligent person. She's barely functional in normal society, completely locked in a "I'm smart, so I'm right" mentality. Even if she may be technically correct, she completely fails to understand that rules might be wrong or needs to be bent to make society work. Yet somehow she also manages to overthink things, needlessly complicating things and designs procedures that requires a higher than average IQ to understand and gets upset when those procedures aren't followed. You'd think that smart people would design simpler and easier solutions, but apparently that's not a given.