Great literary device. Lousy logic!
What did that Sherlock guy know anyway
I rise in defense of the Great Detective, Mr. Sherlock Holmes of Baker Street, London.
My understanding of his famous dictum, "Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth," hinges on understanding what is meant by "the impossible." Take the case of UFO that is in fact a video of a bee. Holmes would have us gather data and start ruling out the things it wasn't. Since, in this example, it WAS a bee, only it being a bee is possible. It cannot possibly be something that it was not.
In Mr. Holmes's line of work, solving crimes in Victorian England, the set of reasonable explanations is somewhat restricted. If you are trying to figure out who strangled the Grand Duke, answers like "a bee" or "it was aliens" pretty much rule themselves out. So he looks at the clues -- the data -- and starts ruling out the obvious suspects whom silly old Inspectors Gregson and Lestrade believe were the culprit. If he can establish that nobody had access to the building, other than family and staff of the Grand Duke, then he has eliminated as impossible everybody other than the family and staff. Eventually, he eliminates every answer that is impossible, being wrong, and is left with the solution, by which Watson almost always is astounded.
In fairness, Holmes uses other processes than a methodical "eliminate the impossible." Sometimes he recognizes the pattern of the crime, having studied such things, and knows that the culprit is surely Wilson, the Notorious Canary Trainer. Sometimes he notices the depth to which the parsley has sunk into the butter on a hot day, and destroys the timeline of the culprit's alibi, leading to a confession. And Holmes benefits hugely from accute powers of observation -- Watson sees almost everything that Holmes sees, but Watson often
sees without
observing.
Also in fairness, Watson seldom shares with us the cases that Holmes fails to solve -- though a few are told if they are interesting to Watson, and others are alluded to in passing, so Holmes's methods are not infallible. We're not seeing a representative sample.
Still, we should all be a little humble in critiquing the logical genius of the one and only S. Holmes, until we have walked a mile in his tobacco-scented Persian slippers.
(I'll mention in closing that I solved one case faster than Holmes, while reading the stories. Many cannot
be solved until the end when he reveals the minutia he observed but that Watson, our usual narrator, did not. But in one case, Homes and Watson both knew of the crucial clues, and Watson reported them early in the story, but neither knew a bit of information about jellyfish that I happened to know. So the score stands at Homes 61, me 1.)