"Every schoolchild knows that Columbus set out across the sea to prove that the world was round. But the belief in a spherical earth had a long and illustrious pedigree, as Columbus himself was well aware. . . . "The second reason that inspired the Admiral [Columbus] to launch his enterprise and helped justify his giving the name 'Indies' to the lands which he discovered was the authority of many learned men who said that one could sail westward from the western end of Africa and Spain to the eastern end of India, and that no great sea lay between.""