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The Laws of Brahma
"According to legend, the Brahmins of the Gangotri monastery were given the sacred task of moving a tower of 64 discs in the order dictated by the god Brahma. This movement requires a minimum of 18,446,744,073,709,551,615 moves and would take 2160 million centuries, the duration of the universe. When these monks have completed this task, the universe will sink into chaos for a night of equal duration, after which Brahma, awakening, will recommence the work of creation."