Quote of the day from a page entitled "Perceptual Fallacies":
There is a tribe called the Ba Mbuti that provide evidence that size
constancy is learned. This tribe lives in a thick jungle where they
never are able to see more than a few yards away. When taken into a
field and shown Buffalo in the distance, they asked what kind of
insects they were. When told that the animals were buffalo, the
tribespeople thought it was witchcraft.
this a great example of something that is universal in some sense, that we all live in our own contexts and reality outside of those contexts seems to be as much of a fiction as anything.