re: Why categorize?
Hmm, I've wondered why those games (some time ago) and those categorizations. Certainly to test us.
I'm not sure it's a good idea to categorize.
Because we're biased by our own experience and subjectivity.
Because it's simplistic and therefore unfair (and dangerous).
Because the way we react also depends on the earlier post. It's very hard to escape personal attacks without becoming personal.
Ok, we're all bound to categorize once or twice, if it's very obvious, but it should be the exception.
Raoul