While I tend to agree, I also remember what it was like to be a very self absorbed teenager. What was seen on the outside did not adequately reflect what was happening inside. did it stop me from doing stupid stuff? Not on your life. It also didn't stop me from taking the 3 R's to heart later.

It's all psychobable and if preditions worked reliably, well, I think I'd become a psychic (maybe that should be psycho \:\) ).
We don't get to know until we do.