Is the earth round or flat? The problem is that the only way we can find an argument is from a book, but it's almost impossible if you're going to drag a third party out.

Like the existence of a black hole, does it exist? Has anyone found it? It's impossible to know, but Mr. Hocking came up with his theory of black holes, and we're willing to believe it, and we believe in his theory.

Funniest thing about flat earthers is when they explain how their sun or moon moves but never really explain why they move they way they do. Flat earthers do not believe in gravity, so, why would the moon or the sun be moving around the world at all? If god made the sun, why not make it like a switch. Gives light for 16 hours and then it's turned off for 8, for everyone, everywhere. But no, somehow he randomly made it that only in some places there is light.