It would be hard to imagine any size able working body of knowledge in mathematics and a database of planetary behavior could have survived long and become any basis of civilization advancement of it is transmitted solely by word of mouth through master apprentice relationship.
If it were transmitted solely through master apprentice relationship, then the other vital ingredient of "advancement" - readiness of the society to de-esotericize it to make broader use of it, was not there. So antikythera device still represented only a curio, not basis of advancement, much less an actual advancement then lemanted as having been subsequently lost.
If it were transmitted solely through master apprentice relationship, then the other vital ingredient of "advancement" - readiness of the society to de-esotericize it to make broader use of it, was not there. So antikythera device still represented only a curio, not basis of advancement, much less an actual advancement then lemanted as having been subsequently lost.
