Imagine 1,000 kids & teens doing anything that involves skill, and looking at the top 3 in terms of overall skill. First of all, there is no way you could get 1,000 people to do anything that they were not at least a little bit interested in doing. So this set of 1,000 random people have at least self-selected into the activity. Maybe it’s tennis, and a bunch of them just really like tennis, and they want to explore tennis. But probably most of them have played tennis to some amount, and some...