antikythera device

Antikythera device:  showing planetary positions for all 7 planets, Earth/Moon not included.  The most recent book decides this device was not a one-only, and that the one recovered from the sunken ship is one of several, all copies, maybe an exclusive for the rich elite, and that one even depicts the next Olympic Games!!!  So, how come such a fantastic device was not considered rare and treasured?  Because it was out of time and place.  Which, since the Greeks made copies, one suspects that the deceased Mycenae civilization, which is being continuously  reinvented and attributed to more and more area ( I suspect it may turn out to be similar to the collapse of the Roman civilization), was the developers.  Think that the Dorics were supposed to have 'conquered' this Mycenae civilization, so it was depicted as small or weakened.  I suspect it was already done in and the Dorics walked in.  Remember that Linear B, their written language was 'disappeared', and the conquering Greeks took the Phonecian language set with vowels for their own;  this requires a stretch of imagination I am not prepared to grant.  No invaders left the useful.  So how could they have left valuable stuff?  They didn't understand it, that's why.  It was so far beyond them.  And then there is the possibility that they were the hated slave masters and everything they had had to go.  Isn't it strange that the range of a cilivization's age usually is 2,000 years?  So wierd as that makes for two rises and falls of a completely different civilization within the Mayan 5,200 year cycle, which of course ends on 2012.  And it began 3110 bc.  Which would give the rise of the Atlantean civilization 2,000, which falling, would spread its survivors out into the world in pockets of advanced knowledge; naturally they would have chosen valleys ringed by mountains. Knowledge that they had almost died with them.  So, if I am right, the Greek knowledge, like the Euro ren, was mostly a borrowed item.  Our fabled western basis of knowledge was merely a tattered hand-me-down.