Isaac Newton would never have discovered the laws of motion had he studied only cats. Suppose you hold a cat, stomach up, and drop it from a second story window. If a cat is simply a mechanical system that obeys Newtons rules of matter in motion, it should land on its back. OK, there are some technicalities—like this should be done in a vacuum, but ignore that for now. Instead, most cats usually avoid injury by twisting themselves on the way down to land on their feet. Most people are not my
