The problem is even if we discover the vast wreck of a 10 thousand year old tiny flat Earth it wouldn't break all the evidence for evolution and it still wouldn't demonstrate that all of humanity was descended from a mix of stone age Homo sapiens and 8 superior Middle Eastern refugees.
(It would probably be better evidence for weird Von Danican ancient aliens stuff.)
It all depends on what the firmament is made of, since it was made BEFORE the Big Bang of our Cosmos. BTW, the tiny Earth of Adam is miles wide and protected Adam's Earth from the water which surrounded it. FYI, If water is above and below a solid object, like a firmament, you can be sure that the firmament is immersed in water. Genesis 1:7-8 Doesn't sound like today's world. Does it?
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