I’m terms of abilities, there’s problems other people can solve that I never will even with years of study and training, and there are problems I can solve that my immediate peers never would, even with years of study and training.
I’m terms off knowledge, everybody you meet knows something you don’t. (They might not have the ability to help you find what it is though)
In terms of skills, behaviors it seems like nobody ever considers trying and finding out for themselves, which is endemic across all levels of academia, government, business, and profession, and in that matter they are all as dumb as a bunch of rocks.