The June 7 issue of Harper’s Weekly contained a writer’s recollections of his interview with the recently deceased Charles Babbage, a British mathematician who had invented a calculating machine in the 1820s. Although Babbage never actually built his “analytical engine,” which would have run on punch cards, he was not averse to making predictions: “Mr. Babbage believe[d] that calculating machines could not merely work out sums, but even that they might be so constructed as to perform the most complex processes of mathematics.” Babbage had also asserted that “machines might be made to find out perfect play at chess, though the united labors of so many generations of players have as yet failed to discover it.”