5 Anti-Catholic Myths Debunked by a Medieval Historian | Dr. Thomas Madden | Last Call Ep. 11
But you can do this either by astronomy, by seeing the shadow of the Earth on the moon during the eclipse, or you could do it by the fact that gravity always goes straight down rather than off to a side, which it would if it was flat.
5 Anti-Catholic Myths Debunked by a Medieval Historian | Dr. Thomas Madden | Last Call Ep. 11
In part, it's related to the Galileo myth, but it's basically this idea that Protestants developed much later that the church was directly opposed to reason and that the only way that they were able to keep power during the Middle Ages was by keeping people stupid and that when the Protestants came in, they accepted reason and the church fought against it.
5 Anti-Catholic Myths Debunked by a Medieval Historian | Dr. Thomas Madden | Last Call Ep. 11
And in his romantic retelling of it, he has Columbus meeting with all the Catholic scholars at the University of Salomonica and saying that the world is flat.