The Frog was the only one who could retrieve the golden ball because he was the only one who could descend into the well. He was the only one who could descend into the well because the art of diving was still unknown in Europe at this time. The art of diving was still unknown in Europe because it had not yet been imported from India. Therefore the Frog was the only one who could retrieve the golden ball. Q.E.D.

Autore: Stephen Mitchell