C. Auguste Dupin discussing Dupin's method in the light of Charles Sanders Peirce's logic of making good guesses or "abductive reasoning," Nancy Harrowitz first quotes Poe's definition of analysis and then shows how "Poe the semiotician is running the gamut of possibilities here—inferences, reasoning backwards, visual, sensual and aural signs, reading faces. Playing cards with the man would have been an interesting experience." There is considerable controversy about the philosophical nature of Dupin's method. According to biographer Joseph Krutch, Dupin is portrayed as a dehumanized thinking machine, a man whose sole interest is in pure logic. However, Krutch has been accused elsewhere of
C. Auguste Dupin deduces what his friend is thinking despite their having walked together in silence for a quarter of an hour, Holmes remarks: "That trick of his breaking in on his friend's thoughts with an apropos remark... is really very showy and superficial"; nevertheless, Holmes later performs the same 'trick' on Watson in "The Adventure of the Cardboard Box". Dupin next appears in a series of seven short stories in "Ellery Queen's Mystery Magazine" by Michael Harrison in the 1960s. The stories were collected by the Publishers Mycroft & Moran in 1968 as "The Exploits of Chevalier Dupin". The stories include "The