theprestige
Penultimate Amazing
Essentially? The marketplace of ideas. Concepts which can only survive unopposed just... aren't worth factoring into the debate.
Is this some perfect exact science? No but it works more often than not.
Does it work, though? Universities are supposed to be the marketplace of ideas. Post-graduate life is about applying the ideas you've chosen in that marketplace.
The risk is that Universities become a safe haven for ideas that cannot survive unopposed, and that graduates carry forward into their community a need to make the community more like the University. Instead of discarding bad ideas on contact with the "real world", making that world more tolerant of those bad ideas. Academia isn't flooding society with open radfems, but it seems pretty clear that the Overton window is shifting in that direction.