i was thinking you could use EMP and ionospheric disturbances as proof that the earth is round, but many flat-earthers believe that nuclear weapons don't exist...
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I looked at the picture of the short mountain close and the tall mountain far away.This:
Far mountains look short if the world curves down, curves up or is flat.Can you please elaborate upon why the near/far mountains don't look convincing?
Far mountains look short if the world curves down, curves up or is flat.