Tell a fish success is measured by climbing a tree, and he will spend his whole life thinking he’s a failure.
What skills, attitudes, personality traits have you seen mismatched to a certain job that later made the individual an awesome worker in another job?
Same with policing. Most police departments (in the US at least) basically don’t want folks above C-student level. There are tests required to be a cop and it’s possible to be rejected for doing too well on them.