I prefer to think of it as "getting wiser," but seriously, how much wisdom does it really take to recall past mistakes, and when the situation presents itself once more, go with "no way in hell I'm doing that again."
It took most of my 20s to get to the point I started learning from my mistakes. I'd like to think that I'm now getting wiser too. Loading up that underage mountain biker with as much weight as possible sounds wise to me. Those boys with their LONG legs, decent muscle mass, and training regimens look to me like they'd be hellers on the trail. You've got to handicap that every way you can!
