The reproduction is built to be a static museum piece and not a well working mechanical calculator. There are also other versions closer to the description by Cicero with the position of several planets, but I have not found how to order these versions. For those interested in a static and interesting item I recommend ordering their copy.

For the same reason they don't need it on other piston-powered aircrafts. Too unlikely too happen and extra objects could create new challenges and lower performance. And this is a zeppeliner that is a rigid construction and not a blimp. There are currently only 5 operational zeppeliners in the world.

Take your medecine please

@@deg6788 -- -- Warning and tip for every country/everyone, esp Ukraine and South Korea : The major limitation of our civilization is: it's absolutely impossible to use math exactitude for basic space time problems (you cannot define 1 mile, 1 second, ... in *math*). Worse, psychologists are allowed to speak in court (time machine, sort of) everywhere, including USA. As a zen-noble man, I claim: if your country won't remove psychology from your universities soon, you should worry about the near future(APR2022-2024). Do you know that the golden calf of psychologists is a database ??

All the technology used and the theories behind what is calculated by the Antikythera mechanism was known at the time the mechanism was built. So there is no need for wild stories about giants, aliens or supernatural beings in order to explain it.

@@robertaas -- -- I like your answer. I'm 99.95% sure that Dorchester Pot came from the previous Cycle but only 90% sure that the Antikythera Mechanism did the same ! If the Mechanism came from this Cycle, given the elegance of the design, why have we not found more similar objects ??? Besides, as a math graduate (sort of), I must point out that: the math needed by the Mechanism-purpose is very difficult without modern math symbols !

@@exactzen There were probably few mechanisms like this at the time so it was very unlikely to find one. If an object is rare, do not have a fixture to a permanent location and is not used in burial rituals then is it extremely unlikely to be found after 2000 years. Pottery on the other hand, they had several in every household. Even so we have probably found a higher percentage of the once existing Antikythera mechanisms than the percentage of once existing pottery. Yes, a lot of pottery have been found, but the percentage of those once existing can still be lower. As for the Dorchester Pot archaeological frauds are not uncommon. Looking just like other items from the same century is was discovered is very suspicious. Disappearing before it could be studied closer is very suspicious. Using Occam's razor one has to acknowledge that the Dorchester Pot being a fraud is far far more likely than any explication involving giants, advanced civilizations living millions of years ago or someone visiting from other planets. Such explications could anyway make a captivating and entertaining movie.

Darren CHAN yes