Sir Arthur Conan Doyle, creator of the fictional detective Sherlock Holmes, purportedly told of a time when he climbed into a taxi cab in Paris. Before he could utter a word, the driver turned to him and asked, "Where can I take you, Mr. Doyle?"
Doyle was flabbergasted. He asked the driver if he had ever seen him before.
"No, sir," the driver responded, "I have never seen you before." Then he explained, "This morning's paper had a story about you being on vacation in Marseilles. This is the taxi stand where people who return from Marseilles always come to. Your skin color tells me you have been on vacation. The ink-spot on your right index finger suggests to me that you are a writer. Your clothing is very English, and not French. Adding up all those pieces of information, I deduced that you are Sir Arthur Conan Doyle."
"This is truly amazing!" the writer exclaimed. "You are a real-life counter-part to my fictional creation, Sherlock Holmes!"