science of stupid greek subs

I've always thought the simplest way to deal with Flat Earthers is to ask them the question: "Well, what would it look like if the Earth was round? I suspect that maybe the nearest ETI that is on our past light cone is 10s of millions of light years away on some other galaxy and to far away to ever detect. Alas, this has absolutely nothing to do with observables, which are independent on the choice of coordinate system. To each scientific question that has been made here, the flat-Earther will respond, "It's magic! Heavily flawed no doubt.

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