I'm 13, but I'm not very arrogant. Pretty much isolated in my room cramming knowledge into my head. Teenagers have always been this way, it might not appear so. Think about, 20-30 years ago a wedgie was a 'boyish prank' now its first class assault. More media coverage too. Although, I do think alot of teenagers are annoying as hell. Some of them are nice and knowledgable. Like someone said (Forget the name, sorry) some are mentally mature, some are not.