Do you have any more information about your USM modelling tool? It sounds interesting.

No, it is not public at the moment, although I am/we are looking for pilot customers especially interested in getting ISO27K compliance.

It is very interesting. I am very surprised how well it worked out.

They completely forget one of the most famous historical historical clocks which preceded the Chinese mechanical clock (1090CE) they listed by about 280 years (807CE).

It was gifted to Charlemagne, the Holy Roman Emperor, by Harūn al-Rashīd: https://muslimheritage.com/baghdad-clock/

I wish they would have said something about the Antikyrthera mechanism, an analog computer from the 2nd century BC capable of complex astronomical predictions and that was about one and half thousand years early compared to the next time we saw similar devices.

Since we saw - yes. Since they saw - we don't know.

But certainly the knowledge of such advanced analog computers was lost to humanity for centuries. Is humbling for sure.