You may not see it at first, but the Yellow spaces create the word OPTICAL, while the blue landscape spells out ILLUSION.
Each of the suits on a deck of cards represents the four major pillars of the economy in the middle ages: heart represented the Church, spades represented the military, clubs represented agriculture, and diamonds represented the merchant class.
"One of the advantages of being disorderly is that one is constantly making exciting discoveries."
- A.A. Milne