Hi,
This is my first post after many, many, many weeks lurking around and reading about all the theories given by folk who believe that the Earth is flat. One in particular is easy to disprove, and that is the belief that Gravity doesn't exist, and that the Earth is constantly accelerating upwards.
Try this. Take two objects : A pea, and a large watermelon. Which hits the ground first? If the Earth is accelerating upwars to "catch" the objects, then they would surely both hit the ground at the same time. But they don't, so how do you explain this?