“Take any book or movie and set it on an island,” Gigi continued, stubbornly cheerful, “and it gets about a thousand times better, no idea why.” “Closed system,” that quiet voice said. Gigi looked again to her new friend/opponent. “Closed system?” “In quantum physics, it’s a system that doesn’t exchange energy or matter with any other system. There are equivalent concepts in thermodynamics and classic mechanics. Chemistry and engineering, too.” He gave a little shrug. “Under those definitions, an island wouldn’t qualify, but the same concept applies. Nothing in, nothing out.” “A closed
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