I think it should be fairly obvious that these guys are geniuses. and I don’t mean genius like omg you got a 99 on Calculus… how did you do it? I’m talking about stuff that changed the world forever. Bill Gates, Einstein, Buffett have all done that. they’re all geniuses, i.e., not normal people.
and btw, Buffett despite his obvious genius did get a graduate degree from Columbia… to give an example to counter the Gates, Einstein degreeless examples.