>>21769923the surface of a sphere is flat. it is geometry. it isnt my fault the only geometry they teach in school is euclidean geometry and that that is even optional. the real universe is noneuclidean. we know that because it isnt a 2D plane. there are other kinds of flat than 2D flat. in 3D, the flattest object is a sphere. in 4D it is a hypersphere. 90 times out of 100 when someone says the earth is flat they're thinking 2 dimensionally. 9 times out of 100 they're thinking 3 dimensionally. 1 time out of 100 they're thinking 4 dimensionally. just depends on how much geometry you know. im not quoting anything. you can define the surface of a sphere with 1 parameter (distance from origin) plus relativity. spheres are 1 dimensional objects. all 1 dimensional objects are definitively flat as fuck.
