On Thu, 15 Sep 2016 11:44 am, Lawrence D’Oliveiro wrote: > On Thursday, September 15, 2016 at 1:26:49 PM UTC+12, Chris Kaynor wrote: >> If you find somebody determined to not trust evidence such as the blue >> marble photos, it can be quite hard to prove that the world is not flat. > > A flat world doesn’t have a horizon.
Yes it does. Even an infinitely large flat plane has a horizon almost identical to the actual horizon. http://www.askamathematician.com/2012/08/q-if-earth-was-flat-would-there-be-the-horizon-if-so-what-would-it-look-like-if-the-earth-was-flat-and-had-infinite-area-would-that-change-the-answer/ http://boards.straightdope.com/sdmb/showthread.php?t=385334 In fact, Flat Earthers consider the flat horizon evidence for a flat Earth: http://www.atlanteanconspiracy.com/2015/01/flat-earth-horizon.html Relevant: https://www.lhup.edu/~dsimanek/flat/flateart.htm (To answer my rhetorical question in the subject header: yes, apparently we can.) -- Steve “Cheer up,” they said, “things could be worse.” So I cheered up, and sure enough, things got worse. -- https://mail.python.org/mailman/listinfo/python-list