Canadian children are safer now than at any other time in history. So why are we so fearful for them? When they're young, we drive them to playdates, fill up their time with organized activity, and cocoon them from every imaginable peril. We think we are doing what's best for them. But as they grow into young adults and we continue to manage their lives, running interference with teachers and coaches, we are, in fact, unwittingly stunting them. Internationally...