Can't run around in a big plastic ball for fear of it popping on a scout, but yet we still allow them to slide down a cliff on a rope, shoot rifles, shotguns, pistols, arrows, & handle pocket knives. There's apparently no risk involved in any of those activities. Oh what about cooking, boiling water can be extremely dangerous. Oh can't go camping anymore, they might get killed or injured in a car accident on the way to or from the camp grounds. Backpacking is out, too many wild animals that might eat them, and they might trip and skin their knee.
As someone else mentioned we can