Marko Rauhamaa wrote:
It is actually quite interesting how the brain forms an accurate idea of a straight line and, say, a circle. Whenever you get a new pair of glasses, the brain needs a recalibration and manages to do it within a week.
I had an interesting experience in that area a few years ago. One of the entries in the PyWeek[1] game programming competition was a platform game set on the inside of a circular world. You saw a small part of the world at a time side-on, with the ground curving up slightly to the left and right. After playing for a while, my brain must have trained itself to see the curved ground as straight, because when I looked away, all horizontal straight lines looked like they were curved *downwards* slightly! [1] A competition for Python-based games, so getting a bit closer to being back on-topic. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
