I have visited the old observatory in Athens, Greece. There, along other treasures (e.g. a Tycho Brahe book) there's a replica of the Antikythera mechanism. Ad

I have visited the old observatory in Athens, Greece. There, along other treasures (e.g. a Tycho Brahe book) there's a replica of the Antikythera mechanism. Additionally, recently they found some kind of inscription in it [1], which describes the way that it works. What is fascinating to me is that they also fixed a bug with the periodicity of an event and wrote it down. According to the tour guide, this signifies that it was massively produced. I still find it incredibly difficult to create a new gear without modern tools and also fix a 'bug' by creating a new, better gear to replace the old one that approximates an astronomical event with better accuracy. [1] https://currentepigraphy.org/2008/09/24/inscriptions-on-the-antikythera-mechanism-1/ https://currentepigraphy.org/2008/09/24/inscriptions-on-the-...