I would also add that if you are not willing to set the example...
But the ridicule is good for it gives a measure of a person, and much to their instructor's chagrin, also gives you a peek into the system and that which is considered important.
There is also something to be said for playing at Diogenes or "Devil's Advocate..." If it were nothing but a polite scholarly debating society you run the risk of falling into ritualistic patterns of thought and expression that stifle a learning environment for those of less disciplined thought processes. It is encumbant upon us to discipline, not combat those thought processes, lest we as a WHOLE become judges by the action of a few.