All true. No real disagreement and I'm often saying "it all depends.." myself. :-) In this case, there is also some vagueness around "random" (predictable to what subsystem when).

I still suspect @kortilla is one of today's lucky 10,000 (https://xkcd.com/1053/) or just read/replied too quickly. :-)

There is a lot written that indicates that the complexity of modern CPUs is ill-disseminated. But there is also wonderful stuff like https://gamozolabs.github.io/metrology/2019/08/19/sushi_roll... { To add a couple links to underwrite my reply in full agreeance. :-) }