Wow I truly didn't expect all these replies, haha. I want to teach them how to land properly, because I care about each person as an individual, however if they ever end up outlawing parkour, I dont want to be the traceur responsible with helping teach them how to catch us. It's just strange to me though, that a well funded state(compared to people) can't learn proper science, yet a community of people can. I guess that shows what will power, curiosity, and dedication is capable of.