One day a biographer submitted his manuscript to Cordell Hull for approval. Some time later it was returned with a single handwritten correction. In a passage detailing an incident during the Spanish American War in which Hull was said to have won "all of his company's money at poker," the word "company" had been replaced with another word: "regiment"!

[Poker is more computationally difficult than checkers or chess. In 2003, a team of computer scientists at the University of Alberta unveiled the beta version of PsOpti ("pseudo-optimal poker program") and tested it against one of the world's best players. "After 7,000 hands," its designers reported, "it was clear that the human was the better player."]