Quote:
Originally Posted by onetwo_threefour
On a small scale a flat earth model is useful because you can navigate on ordinary scales of speed (walking, running, driving) without worrying too much about the curvature of the earth.
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It's also quite helpful for walking, running, driving to not have to worry that atoms of matter are mostly empty space - it would suck to continually fall through the earth, or have the earth end up embedded in the mostly empty spaces in the atoms comprising your body.