Does it matter for your everyday life if it's round or not? Your area of activity is roughly 30 square miles. You operate in a tiny fraction of the surface of the earth. It makes no difference to your puny existence whether it's flat or round. For your purposes it may as well be flat.
It's more about the implication of being lied to
So let's think about it in practical terms. Say they are lying to you, which is obvious, as the government has lied to it's citizens since time immemorial. What now? Well that means the government is illegitimate doesn't it? Will it stop people from believing in the government which still has thugs that can kick in your door and your face any time they want? How about money? It has no intrinsic value, and the fed can counterfeit it with no repercussion, any ol' joe however, will have their door and their face kicked in by the state if they try.
How do you undo all these lies without destroying civilization?
Ok
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