re: Flat-Earthers: Trolls or Idiots?

No one ever mentions how early man figured out it's roundness. I usta enjoy when tied up on the coast to get out a big pair of binocs and watch boats go out and come in. I also usta try to guess how far way a platform was by how close to the water it appeared. on cold clear how humidity day this was very easy to see and the sphere is easy to see. Early scientist even calculated the size of the sphere very accurately by watching tall ships sail away and taking measurements on when the hull disappeared and height of masts seen as it disappeared around the curve. Early man thought it was flat too till they learned better