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An unpromising lump of metal found in a 2,000-year-old shipwreck seems to be an ordinary treasure: the worlds first computer. NOVA follows the ingenious detective work that painstakingly came upon the reality in regards to the ancient Greek device: it was once an astonishingly subtle astronomical calculator and eclipse predictor, unequalled till the era of brand new science and believed to be from the workshop of Archimedes.