Did you hear about the latest "Da Vinci Code?" No, it's not another book/movie controversy--some musician/computer guy claims to have found a hidden musical composition in Da Vinci's Last Supper.
Oh. Come. On.
Even if I didn't have that master's in art history giggling at that one, just my general sense of logic would have scoffed at this one. "Pala first saw that by drawing the five lines of a musical staff across the painting, the loaves of bread on the table as well as the hands of Jesus and the Apostles could each represent a musical note." Riiight. Because hands and bread loaves so closely resemble musical notes. Oh look, is that a knight of Templar over there in the corner?!
Yeesh. You think you get away from the kookier interpretations by sticking to old paintings in naturalistic, non-abstract styles... but there will always be some bizarre theory that makes your whole discipline look foolish. Maybe that's why I wrote my thesis about liturgical objects instead of paintings. When an object is used for a particular function in the church, and it bears a particular image, it's a pretty safe bet that that image is obviously tied to the function of the object. It's not too far a leap, there.
Then again, maybe there were hidden musical notes in St. Veronica's robes on one of those altarpieces I studied... wonder what that means, hmmm?