For more than a decade, amateur and professional cryptographers have been trying to decipher an encrypted sculpture that sits on the grounds of the CIA headquarters in Langley, Virginia. Three-fourths of the sculpture has already been solved.But now Jim Sanborn, the artist who created the Kryptos sculpture, says he made a mistake. A previously solved part of the puzzle that sleuths assumed was correct for years isn't. The new information, including what the mistaken text really says, is creating a buzz among enthusiasts who've been obsessed over the sculpture for years.