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Dubner’s Hi-Lo strategy as provided to the panel discussion on “Computers Applied to Games of Skill and Chance” at the 1963 Fall Joint Computer Conference. The top image is that of an actual 3 x 5 card that was handed out to attendees. The clamor by attendees to obtain one of the copies caused, in the words of Dubner’s wife, Harriet, a “riot.” The bottom image is taken from an 8 1/2 x 11 photocopy of nine apparent slides most likely presented at the panel discussion. Little doubt remains that these materials, either as slides and/or as handouts, were in fact presented at the panel discussion. Thorp remembers that they were. Dubner’s son Robert doubts that they were presented at a later meeting or published after the conference. (Courtesy of Dubner family)