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You also can't see the north star from Australia, which makes no sense if the earth is a disk with a dome of stars on top. The north star should be visible from every place on the plane.

You just do this "flat earth' scam so that you can feel like you are part of a group since being banned from the South Park reddit. Sort of like the Doomsday Cult.

Precision gyroscopes precession deviation

Time zones

Flat earth is basically Scientology kek

Find someone who lives at a different latitude (north or south of you)

Both of you, put a vertical stick in the ground 1 meter high.

At midday, you both measure the length of the shadow cast by this stick.

Now, for a flat earth, the shadow will be exactly the same length. For a spheroid earth, the shadow in the North will be longer (you can calculate the size of the Earth this way)