Antikythera mechanism possibly older than previously thought?

[Heywood]

So antikythera device might well be a one off thing, the little appreciated flash of inspiration of one forgotten genius, like the tank or flying machine of Leonardo Da Vinci. It does not represent an entire lost branch of socialized or utilized knowledge and technology 17 centuries ahead of its time.

Bah! Humbug! The tinkerings of Leonardo are child's play compared to the amount of detailed maths and astronomy knowledge that are employed in the antikythera mechanism.

Chuck's point was the antikythera mechanism might be a one off thing.....like Da Vinci's tank. Something not appreciated in its time and nearly forgotten. Chuck did not claim Da Vinci's tank embodied the same amount of knowledge as the antikythera mechanism.