Twins would be so nice as a team, they would practically be a hive mind
Edit: well twins that would get along of course.
Edit2:
True but what is his IQ, you see he doesn't have many friends, and is quite strange in many conversations. Maybe it is in the 200's. There was once (In real life) a guy with over 300 in IQ and got into Harvard at the age of 12. So ya, maybeJoel just has a much higher IQ that everyone else.