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La segretezza perfetta di Claude Shannon

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    Michael W.
    Michael W.


    Nicolas K.
    Nicolas K.

    When a human shuffles a deck of cards, the result usually is a lot less random than, e.g., a computer that shuffles a virtual deck of cards. Reasons for this include the fact that the initial distribution of the cards may be partially sorted, e.g., when they come from a previous game, then the impatience of the shuffling human who tends to shuffle only for a short amount of time, and cards that may stick together. I have heard of one occasion where this became very noticeable: when, for the first time, Bridge tournaments where held with cards that where shuffled by a computer. The experienced Bridge players immediately protested and claimed that the computer generated predominantly "unlikely" distributions. However, it turned out that there was nothing wrong with the computer, but that human shuffling resulted in quite distinct distributions.

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