Neither this movie nor "Dogtown," by the way, answers the question I have every time I see high-level skateboarding: In order to learn to fly free high into the air, and go through body twists, and land again on your board, you presumably must fail a lot of times before you succeed. It looks to me as if that would involve a drop of 10 or 20 feet to a hard surface. How many skateboarders are killed? Maimed? Paralyzed? What about that first guy who thought about flying free beyond the lip of his skating surface--how did he think he would get down again?
Really, though, I think this is a question that applies to a great deal of human activity, not just skateboarding.