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I have no clue about any arguments flat earthers make, but I am curious how they would object to some of the fundamental concepts like you provided. I suppose i

• manfredo 6y ago
  Personally I think that it's just the limits of geometric understanding for some peole. Personally I hit that limit when I tried to understand quaternions. Some people hit that limit with calculus. I guess others hit that limit when they try to understand perspective from a sphere.
• minxomat 6y ago
  The gist of that is in the article. They never need and rarely do object to "fundamental concepts". Rather, they object to what they perceive to be your belief in them. That way, they never have to address anything directly.
• giomasce 6y ago
  They invent new scientific rules. With two caveats: first, the new rules are not independently tested by experiment (maybe they are vaguely justified by thought experiment; thought by them); second, their rules are just qualitative, nearly never quantitative, so that they basically everything can be true. So, measuring angles is off limits. Then they admit you cannot see things that are far away and close to the horizon, but not by curvature. By perspective: perspective laws, they say, mandate that far away objects become very small, too small to be seen. Do you basically can see only a limited part of the sky, at a sufficiently high angle from the horizon on the flat earth. That is why you can't see the whole sky.