Do you even know what negative curvature means?
I won't waste my time proving something which is already proven;
Go and talk with an air force pilot, he will testify that it's not always the camera's fault.
Or show me evidence that earth is flat; As of now, all the evidence proves otherwise.
Enlighten me about the shape of earth you have in your "mind". Square? Diamond? Hexagon?
@Desert Fox Why don't these flat earthers fund a space tour instead of making a mockery of Physics, mathematics and astronomy?
And you need a brain.
You will be at your starting point again, that's what happens in real world, and that itself disproves flat earth theory. According to flat earthers however, you will reach a spot which is sealed off by US forces and beyond that is a place full of natural resources, and further ahead is abyss.