Yeah, and when they arrived at the present-day American continent, they called the natives "Indians" because they thought they were in India. Thus, we have the results of their "facts" to this day.<quoted text>
So you are saying that centuries ago, the world was, in fact, flat. Not merely believed to be flat, but in fact it WAS flat.
Facts do not change.
Historical point: when Columbus set sail on his voyage, no one was worried about falling off the edge of the world. They were worried about just how far the East Indies were, did they have enough food and water on board to make it, were there any sea monsters, etc, etc, etc. But no one except the ignorant peasants believed that the world was flat. About 23 centuries ago, the Greeks calculated the diameter of the Earth.