Inside the Monkeysphere is a wise and funny article by David Wong about the effects of being hard-wired (as human beings apparently are) to live in tribes of up to 150. The effects can include racism, complacency and selfishness. I’m not as sure as he is that they can’t be transcended though…
He’s put a lot of work into the article, and not least into the monkey-related photos that accompany it.
Inside The Monkeysphere