That's not a "theorem" in the mathematical sense, that's a study. It's an interesting one though, showing how humans perceive space and proximity and suggesting

That's not a "theorem" in the mathematical sense, that's a study. It's an interesting one though, showing how humans perceive space and proximity and suggesting it's biologically rooted since we share it with animals. I'd like to see comparisons across cultures like US vs Japan, and across less herd-like types of animals, like lions or something. And maybe one for fishes, because they use a 3-D comparison. (Maybe I should ask for one with ponies by this point.)