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“Sherlock?” “Hmm?” “Who is Jack?” “It’s a common enough name, so I suppose that many people are Jack. However, estimating a percentage or an absolute number would require facts I am not currently in possession of.” “Well, I am assuming at least one of them is familiar to you, since he called for you today.” --- “ He called my phone.” “That does sound like something Jack would do.” --- --- “Are you going to tell me anything about Jack, or should I just give up now?” “When you have eliminated the impossible whatever remains, however improbable, must be the truth.” “?” “It is a basic principle of logical deduction.” “I know. It is posted prominently on your website, and as strange as it may be, I do sometimes listen to you when you talk.” --- “Does it have anything to do with Jack?” “Indeed it does. Jack Harkness appears to be the universe’s one exception to that fundamental rule. When he is involved, one should never eliminate the impossible. In fact, one would be advised to move the impossible to somewhere near the top of their list. It’s wrong but it does have a significantly higher statistical probability of a positive result.” “huh” --- --- “Did the good Captain leave a message?” “As a matter of fact he did. He said he called to wish you congratulations. He was happy to hear you were no longer alone.” “Hmph. Well, what did I just say about the likelihood of the impossible?”