bonus:
Earth is flat motionless plane covered with a firmament-dome.
So water being still proves the earth is flat? Would then water moving prove the earth is moving and a globe? You only need to go to the sea then, check how the water moves, boom, flat earth disproved.
Besides, anybody can go to the Panama Canal to see that water isn't flat. If water were flat, you wouldn't need locks at the Canal. The thing that the Canal proves is that water is different levels, but depending on where it is, the changes in levels are so tiny that they are not noticeable.
What this does is makes the level water idea insufficient for determining if the earth is flat or some other shape.
