This episode explores the discovery and mystery of the Antikythera Mechanism, a 2nd-century BCE device recovered from a shipwreck near the Greek island of Antikythera. At first dismissed as corroded bronze, it was later revealed to contain a system of precision gears, making it the world’s earliest known astronomical computer. The mechanism could predict eclipses, track planetary movements, model lunar phases, and even time the Olympic Games. Its sophistication suggests that ancient Greek engineers had knowledge of mechanics and astronomy far beyond what was once believed. Yet questions remain: Was it a unique masterpiece or part of a lost technological tradition? Why has no other device like it ever been found? And what else might have been forgotten by history? The Antikythera Mechanism stands as a symbol of both human genius and the fragility of knowledge—a reminder that some achievements can be centuries ahead of their time, only to vanish into mystery.