Jim Sanborn has spent nearly 20 years watching his cryptography sculpture, "Kryptos," sit only partially-solved in the C.I.A.'s headquarters in Langley, Virginia. Sanborn recently released a clue for people attempting to decipher the enigmatic and beautiful piece of sculpture (spoiler alert): one of the words in the unsolved 97-letter section is ... "BERLIN."
Joining us to discuss the puzzle, its significance, and her years of observation on the code's followers is Elonka Dunin, a game developer and co-founder of the Kryptos Discussion Group, for people attempting to solve the cipher.