There's a tribal people, in South America I believe, who ever year have a festival where they build a large tower with platfoms, then leap towards the ground, with only vines and a break-point type hinge to break their fall. If any of this tried it on a whim, we'd probably lose a leg or leave a respectable crater in the ground. Just because the people don't come from what you would consider "civilization" doesn't mean they are stupid.

When I was back in 6th grade, we had a foreign exchange student from South Africa. Next to no English, a peculiar fear of automatic doors, yet the first time the rules of chess were explained to him, he destroyed everyone, including the teachers. He was unstoppable.

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