June 2, 2022
At one point in the novel “Sign of the Four,” Sir Arthur Conan Doyle’s inimitable detective Sherlock Holmes explains and demonstrates to Dr. Watson his method of observation and deduction. Confronted with an apparently inexplicable circumstance, Dr. Watson is utterly perplexed. He simply cannot understand how the event in question came to pass, given the facts as he understands them and the laws of nature. Slightly irritated at his plodding companion’s bafflement, Holmes once again shares with him the methodological key to solving all such mysteries: “When you have eliminated the impossible, whatever remains, however improbable, must be the truth.”