In 1420, the dignitaries of Florence held a competition.

They offered the enormous prize of 200 gold florins to the architect whose genius could span the unfinished dome of the Florence Cathedral.

This was a great challenge. Even the original builders of the cathedral in 1296 left writings hoping that God would offer a solution because they did not have one.

Filippo Brunelleschi was the answer to their prayers.

He proposed the radical idea of a dome supported by a brick vaulting system that balanced the opposing forces, but without the customary central supports.

The experts called him mad.

Brunelleschi sought to demonstrate his design with a challenge.

He could stand an egg upright on a flat surface. Could they?

All were unsuccessful.

Finally, Brunelleschi cracked the bottom of the egg and set it down.

It must have been a mess, but it stood upright and demonstrated his idea.

The experts protested, but Brunelleschi remarked that they could have done the same if they had understood his design.

Of course, they did not. They didn