“The great majority of people, of incidents, and of cases resemble each other in the main and larger features…Most men have…a head, two arms, a nose, a mouth, and a certain number of teeth. It is the little differences, themselves trifles, such as the droop of an eyelid, or what not, which differentiates man.” – Joseph Bell

“It is your commonplace, featureless crimes which are really puzzling, just as a commonplace face is the most difficult to identify.” – Sherlock Holmes

“We must look for consistency. Where there is a want of it we must suspect deception.” – Sherlock Holmes

“Yes indeed you see, we all see, but often you do not observe.” – Joseph Bell

“You see, but you do not observe. The distinction is clear. For example, you have frequently seen the steps which lead up from the hall to this room.” – Sherlock Holmes

情報とは差異 (= manifestation of contingency)。区別のないところに情報は生まれない。

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