I do agree with you about many flat-Earthers thinking math and science is all witchcraft. (A very few are actually smarter, but misguided.) My whole goal was not to get them to understand any of the math involved, but simply to be able to check for themselves if the results that get spit out can be verified in a simple way that they DO understand. THAT in itself is a very real challenge! But it was a fun challenge anyway. If anyone can come up with any reasonable and logical argument against any of the results I show, I'll listen. So far, nobody seems up to the challenge. We definitely live in interesting times. Some of the stupidity is scary though.