That Guy on 05 July 2009
c'mon guys, there is a WAY more practical answer to this:
child labor.
Teenagers who are 14-17 still have to go through school and thus their work schedule is limited. I'm not sure exactly how much, but being forced to stop working after 4 hours is not uncommon.
Mark Kate and Ashley Olsen got big mainly because they were twins-- one kid could work 4 hours and the other kid could work the other 4 hours, thus being able to do a full work schedule.
