Play is the work of children. It's very serious stuff.
It requires more strength to be gentle, so it's the everyday encounters of life that I think we've prepared children for and prepared them to be good to other people and to consider other people.
It is my contention that most people are not mugged every day, that most people in this world do not encounter violence every day. I think we prepare people for violence, and I think just as importantly we prepare people for the definition of being gentle.