The reality is that the globe claim holds no water, the burden of proof is on it and it failed, we are now in a situation of not knowing the full dimensions, any model put to you must be falsifiable, you need to ask them how they plan on making it so, the only way is full exploration, without that we will forever go in circles arguing, that is what they want, don't let them away with it :)
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https://www.youtube.com/watch?v=cNsnuZxlCos