Our opponents' objections to our ideas often contain insight as to how we can better refine them.
As humans, we teach each other. But do we take for granted our freedom to do so?
Sometimes, academic expression can make people uncomfortable. But this tension is a feature, not a bug.
In general, birds of a feather do tend to flock together.
This is the psychology of why friendships (and marriages) fail.
You copy the people to whom you are connected primarily and you come to copy them along a whole variety of traits.