What if

http://news.discovery.com/history/do-mona-lisas-eyes-hide-a-secret-code.html

This is really interesting. I think it'd be funny if art historians and archeologists and chemists came to the conclusion that Mona Lisa was actually just a paint-by-number Da Vinci bought at ye olde K-Mart and our famous one is just one of many many others that have now withered away.

OR IT'S A CODE AND DAN BROWN WAS RIGHT.