Finally!

This is a new episode after more than a year. :)

I highly recommend this serie of videos about building a reconstruction of the The Antikythera Mechanism with tool similar to the ancient tools. [Warning: It's a huge time sink] Complete playlist: https://www.youtube.com/watch?v=ML4tw_UzqZE&list=PLZioPDnFPN...

We systematically underestimate the wisdom of the ancients.

The sophistication of that 19-year lunar cycle bespeaks centuries of noodling on the problem, to say nothing of the skill on display executing the construction.