The University of Salamanca

But for the Enterprise of the Indies to work, for ships and crews to survive the long voyage,the Earth had to be smaller than Eratosthenes had said. Columbus therefore cheated on his calculations, as the examining faculty of the University of Salamanca quite correctly pointed out. He used the smallest possible circumference of the Earth and the greatest eastward extension of Asia he could find in all the topics available to him, and then exaggerated even those. Had the Americas not been in the way, Columbus’ expeditions would have failed utterly.