Complete Vs. Perfect Information
Complete and perfect information are importantly different. In a game of complete information, the structure of the game and the payoff functions of the players are commonly known but players may not see all of the moves made by other players (for instance, the initial placement of ships in Battleship); there may also be a chance element (as in most card games). Games of incomplete information arise most frequently in social science rather than as games in the narrow sense. For instance, Harsanyi was motivated by consideration of arms control negotiations, where the players may be uncertain both of the capabilities of their opponents and of their desires and beliefs. Games of incomplete information can be converted into games of complete but imperfect information under the "common prior assumption." This assumption is commonly made for pragmatic reasons, but its justification remains controversial.
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Famous quotes containing the words complete, perfect and/or information:
“Much that is urged on us new parents is useless, because we didn’t really choose it. It was pushed on us. It—whether it be Raffi videos, French lessons, or the complete works of Brazelton—might be just right for you and your particular child. But it is only right when you feel that it is. You know your family best; you decide.”
—Sonia Taitz (20th century)
“You have not yet learned that in this life you have to be like everyone else: the perfect mediocrity—no better, no worse. Individuality is a monster and it must be strangled in its cradle to make our friends feel comfortable.”
—Stanley Kubrick (b. 1928)
“As information technology restructures the work situation, it abstracts thought from action.”
—Shoshana Zuboff (b. 1951)