What was the reason a three legged stool is the best? Doesn't that depend on your environment? E.g. the amount of gravity, perhaps wind, or the quality of materials available to construct a stool?
Three points make a plane, a fourth point is redundant. Three equidistant stool legs are stable on any surface regardless of flatness, but four equidistant stool legs need to be aligned correctly with a non-flat surface to be stable.
If you're an oompa loompa living in Willie Wonka's world where there's no such thing as rigid construction and everything is candy, the ability to have any level of technological civilization (including stool building) is dubious.
