This is a misunderstanding -- popular folklore is that people in Columbus's day thought the world was flat, but that's not true. It was known since at least the Ancient Greeks that the Earth was round; Erastosthenese (I think) measured the diameter pretty accurately.The JAM wrote: If any society on Earth had a globe in 1492, history would have been rather...much more interesting from that point. Sad thing is that Aristotle (I think) composed a globe, not very accurate, but a globe nonetheless, and no one seemed to be interested in it.
The dispute was the diameter of the Earth. Columbus had been listening to some crackpot who had botched the measurement, and thought the world was only 6000 miles in diameter. The educated people knew the Earth was 8000 miles in diameter, and that there was no way that the ships of the day could travel the distance. (Atlantic + Americas + the Pacific)
And they were right, Columbus had a hard enough time crossing the Atlantic. If not for the pure dumb luck that there was a continent in the way, he'd have sailed on and never been heard from again.
But if you go where no one had gone before, you may find things no one has found before -- even if you are a crackpot.
Which may be Quentyn's future -- he may find something completely amazing, and completely unrelated to any reason he or anyone else has for looking beyond the mist wall.