But not nearly as strange as a description referencing a jet plane in AD 1900, eh what?
http://en.wikipedia.org/wiki/Antikythera_mechanism
The level of machining skill needed to create it was once thought to be impossible for ancient peoples. A close examination revealed that it was in fact a computer that was used to forecast horoscopes years into the future.
The moral of the story is, ancient people were a lot smarter than we give them credit for.
Cheers,
knewshound