^^Excellent story/info however poor comparison.
Reason (IMO) The Last Supper could be the greatest "experiment" (mistake) ever. Other than the Sistine Chapel, possibly the most "valuable" (from many perspectives) painting (fresco) in the world.
Sidenote: How much better would it have been with a better medium? Your comment induced curiosity and a quick wiki read, informed me that "Due to the methods used, and a variety of environmental factors, as well as intentional damage, very little of the original painting remains today, despite numerous restoration attempts, the last being completed in 1999."
Originally Posted by
habilis
I'm reminded of Leonardo Da Vinci, who thought walnut oil would make a good substitute for linseed oil in his paints. He painted The Last Supper, a mural, using his new formula. The paint never dried. He tried speeding up the drying with lamps, but the paint ran and the image blurred.