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I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

posted Sep 15, 2011, 3:05 PM by Fernando Berzal   [ updated Oct 1, 2011, 9:50 AM ]

-- Sir Arthur Conan Doyle, The Adventures of Sherlock Holmes (1892), "A Scandal in Bohemia"