Introverts sharpen themselves and quite often erroneously....
I don't understand why you say that. Or where your evidence for that is.
Being an introvert is not pathological. It's not even necessarily being shy.
I'm far from shy, but definately an introvert.
Introverts, as far as I can see, and from what I do, perform just as many good acts as anyone else. Many times I think introverts just don't have to announce everything they do to the world at large, or invite others to join in.
Sorry to stray from the topic, but that just hit not exactly a nerve, just induced exasperation that there is some kind or error in the way we handle ourselves or do things.