Just random thoughts. If the Earth were flat I'd like to look for its edge and jump off of it.
Where would its edge be?
Would "gravity" affect me?
Where would I end up?
the flat theory doesnt mean the earth is flat like a piece of paper, it just means it is more close to a flat piece rather than a round ball
so even at the edge, it wld look like night time on a mountain because the land is so huge, more like a huge meteorite
japan have sent a rover on a meteorite you can check the picture to see how it looks like being on the edge
gravity is a strange thing, are really our brains ready to understand what is the flat earth about, because it changes many known theories. even in the classical theories it is difficult to define gravity
the flat earth theory is like a negation of known theories, so it doesnt explain a lot what is the reality of it all, what if the earth has no edge ?