ABSTRACT In 1900, Greek sponge divers discovered an ancient Greek treasure in the waters of the Aegean island of Antikythera: a device with gears dubbed the Antikythera Mechanism. Scientists studied it for almost a century and eventually declared it the most advanced machine preserved from the ancient world. This device predicted solar and lunar eclipses and harmonized the Greeks' sacrifices to their gods with their Panhellenic games and agriculture. This geared computer from the 2nd century BCE is now said to mirror the philosophy of Aristotle and the science of Archimedes. It was the product of an advanced Greek technological infrastructure that early Christians destroyed.