Random832 <random...@fastmail.com>: > On Thu, Sep 15, 2016, at 15:06, Steve D'Aprano wrote: >> No, the horizon would still be horizontal. It merely wouldn't *look* >> horizontal, an optical illusion. > > I guess that depends on your definition of what a horizon is - and > what a straight line is, if not the path followed by a beam of light.
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 don't think it has anything with "the path followed by a beam of light." Marko -- https://mail.python.org/mailman/listinfo/python-list
