Listen, earth actually is flat. It's flat as fuck. It only looks round, because... Spacetime curvature. We just live in a curved spacetime that's all! There https://en.wikipedia.org/wiki/Curved_space >>A very familiar example of a curved space is the surface of a sphere. While to our familiar outlook the sphere looks three-dimensional, if an object is constrained to lie on the surface, it only has two dimensions that it can move in. The surface of a sphere can be completely described by two dimensions since no matter how rough the surface may appear to be, it is still only a surface, which is the two-dimensional outside border of a volume. **Even the surface of the Earth, which is fractal in complexity, is still only a two-dimensional boundary along the outside of a volume.**