Abstract

Suppose you take a tour of the Louvre, that great museum in Paris housing one of the finest art collections in the world. As you walk through the museum, you come across a painting by someone named Leonardo da Vinci -- the Mona Lisa. Suppose this is your first exposure to da Vinci -- you hadn't heard of him or seen the Mona Lisa before. What could you conclude? Certainly you could conclude that da Vinci was a consummate painter. Nevertheless, just from the Mona Lisa you couldn't conclude that da Vinci was also a consummate engineer, musician, scientist, and inventor, whose ideas were centuries ahead of their time