Colleges and universities as we know them today came out of the monastic tradition in the late Middle Ages. They’re meant to be a battle place of scholarship. Biologically, the reason we adapted to think was that so we could let our bad ideas die instead of dying ourselves.
It’s also why we shouldn’t fault one another for saying things that we may find to be stupid in the moment, because only through revealing your ignorance and coming to grips with it will you actually be able to learn or understand anything new.