I think that those of us that are still in school or who have younger siblings (or children!) have an advantage here.

I myself know several 11 year olds who are incredibly intellectual and say the most insightful things... while still having the mind to play. I also know from experience that the maturity level of a 12 year old and a 13 year old is huge. I mean HUGE. Or at least it is where I live. People mature at a super fast rate from age 12-14~15 and I've been trying to incorporate that with Tora (my school charrie) as she gets older.

I know I moved a bit away from 11 year olds...