Where does the ocean water go when it arrives at the edge of the Earth?
Pelham,
You are possibly picturing a flat disk floating in space with water spilling off the edge.
That is NOT the correct picture. That is the image use by mockers. It is a straw man argument. Ignore it.
Try this:
A flat disk (like a phonograph record) sitting on a larger flat table. The edge of the disk has an ice wall several hundred feet high.
The water does not “go” anywhere. It is contained.