Re: should there be an age for black belts?
IMHO, age is absolute, maturity is relative. Some organizations have age requirements, some do not. Much is the same with independent teachers. The best advice I could give is to ignore what others are, or are not, doing. It's not about a rank competition. If someone is given rank before he deserves it, it has been my experience that he will not be given the respect that goes with it until he deserves it. A belt only holds up your pants.