Mathemagical genius Marty Leeds renders logic with style with the ultimate rhetorical question.
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Can you measure the curvature?
All in all it should open the conversation instead of closing it in with stubbornness of ideas.
It's all just ideas.
You've only been indoctrinated your whole life into a lie and been made submissive and supportive of that lie as long as you want to live in it.Make due with your past mindsets and prescribed preconceptions.
Open your mind to reality. It's much more subjective than one can realize:)