The 1892 book, the Memoirs of Sherlock Holmes by Sir Arthur Conan Doyle, is a collection of short stories. One of the stories is “Silver Blaze,”a mystery about the disappearance of a famous racehorse the night before a race and the murder of the horse’s trainer. Sherlock Homes solves the mystery in part by recognizing that no one he spoke to in his investigation remarked that they had heard barking from the watchdog during the night. Gregory (Scotland Yard detective): “Is there any other point to which you would wish to draw my attention?” Holmes: “To the curious incident of the dog in the night-time.” Gregory: “The dog did nothing in the night-time.” Holmes: “That was the curious incident.” The fact that the dog did…