What would be the point?
So if they said, "Dang, you got us. The Earth really is flat," you would accept that?
What if they offered to prove once and for all that Earth was round. What exactly would it take? What if they offered to take you up in the Space Shuttle to see for yourself? Would you believe it then? Or would you think it all took place in a flight simulator? What if they let you do a space walk? Would that convince you?
Seriously. I'm just curious.