Wait ... what!!!! Oh man, I stopped on the first page and did not realize this was about flat earth.
Lets go logical on this, gravity is present here on earth so water flows to the lowest point. Since the surface of the earth is largely water, it would have found the edges billions of years ago and flowed right off. Unless the earth is like a pizza and has a crust/berm all the way around the edge. We would then be able to see that of course.
Also, with over 10 billion humans that have ever lived, the edge would have been seen by now and we would have pictures of it or in the old days, an X on a map somewhere.
Plus, if it were flat and we have sun rises and sunsets, that would mean that the earth is flipping like a piece of plywood which would create massive amounts of force near the far edges and none at the center.
Soooo, the earth is molten on the inside very basically put. Therefore gravity pulls towards the center making the item = round. Take a chunk of clay, some wet snow or dough and squeeze it uniformly towards the center. Ta-da = round.
Sorry but there are so many laws of science, coriolis effect to name just one, pictures and so on that a flat earth just is impossible. I am religious also but come on, it just does not come into play. No way, no how.
Just my 2 cents