Rev7

It sounds like you're my friend and I combined: I'm in the band, and he programs calculators (and computers. But if we started talking about that, we'd get into his anti-Microsoft campaign).

Either way, popularity is more a perception than a group. A person that gets attention is popular. Same thing with the idea of nerds. Each 'caste' is just a group of people with likes and dislikes. It's the people that look up to a 'caste' that are viewed as popular.