“Dr. Watson, I presume?” Arthur Conan Doyle never had Sherlock Holmes say, “Dr. Watson, I presume.” It’s a mix up of the first meeting of Watson and Holmes with the meeting of the colonial explorers Dr. David Livingston and Henry Morton Stanley in Africa. What Holmes actually said, Mary would like you to know, in his opening lines of A Study in Scarlet was: “You have been in Afghanistan, I perceive.” Mary would have thought this, and my clarifying footnote, hilarious. This was the note Mary sent me before I took the job as her second-chair here at the magazine. “Dear Jeremyâ€...