"I hear that the flat earth people are still, after all of these years, racking in the bucks.
Right?"
Good point.
Which reminds me. Columbus believed the world was round by reading the Bible, which is stated in his writings.
Really. Cite please. The learned world had known the Earth was a sphere since a few centuries before Christ. A Greek fellow not only deduced its shape, but he also calculated the size (to within a few hundred miles of its actual size). It was only the ignorant peasantry of the late Medieval period, taking literally the Bible stories they'd been read, who believed the Earth was flat.
Now, Columbus did make a major mistake though -- he thought the Earth was a lot smaller than it was. That's why he thought he'd reached India when he bumped into the Americas.