Mad Social Scientist

Ever since reading Simon Singh's The Code Book, I've been fascinated with cryptography. Many of you are probably familiar with modern techniques (RSA, PGP, and all that jazz). But there are older codes from the pre-computer dark ages that still haven't been solved, because they offer tantalizingly little to go on. Here's an example from an English tomb. The surviving members of the famed WWII Bletchley Park code breakers (whose original numbers included such luminaries as Alan Turing) are trying to crack it.