https://www.youtube.com/watch?v=1T9xQy-dsQo

Author needs to decide which end of the stratum stack they want as the top.

This design from 2010 had at the top stratum 1 sources at Australia's National Measurement Institute (NMI)

Among otherwise comparable candidates, the lower stratum carries more weight.

Each decision solved the problem in front of it. Nobody was asked to look at the sum of all actions.

This is the perfect description of Telstra as a company.

They're pretty readable, I recommend that second one (though it leaves some questions I have unanswered). It's a good example of how latent issues with a large system can go unrecognised for a long time before a seeming unrelated change can trigger a cascading failure

Direct link to the analysis report: https://www.telstra.com.au/content/dam/tcom/dynamic-media-pr...

All I could think of while reading this was “has no one heard of ntptrace?”

It's funny, but I had the same thing happen to me once. One day, overnight, my computer decided it was 2006.

It happened twenty years ago...

;-)