Randy cannot even remember ever uttering the word "Arethusa." It was printed on the wrappers on the bricks of ETC cards that he ran through Chester’s card reader. Now Randy pictures a box inside Grandpa’s old trunk labeled Harvard-Waterhouse Prime Factor Challenge and dated in the early 1950s. So that at least gives him a date to peg on Pontifex. "You were at NSA during the late forties and early fifties," Randy says. "You must have worked on Harvest." Harvest was a legendary code-breaking supercomputer, three decades ahead of its time, built by ETC engineers working under an NSA contract.