I was just thinking, has anyone who's ever taken Cryptography ever thought about making a Cipher for one side of a "crib-sheet" for a non-computer science course? LIke, if your instructor allowed you to bring only one side crib-sheet in which the other side couldn't have anything for the test, then you could print out extra cheat notes out in a cipher-text on only one side and use the other to write your normal notes. This way you could get double the cheat-sheet and you could just lie to your professor, saying its random garbage printed on some scrap sheet you decided to take from the computer lab. I would like to try this out, if it wasn't for the penalty for getting caught cheating were so high. I would try to pull it off on one of my computer science professors, in the hopes of getting extra points for extra effort in trying to apply what I learn in the class-room in everyday life.