Truly one of my favorite talks on software systems and composition. It's so dense that I had to watch it 3 times to really absorb the subtleties. He also has 'the language of the system', which is excellent, and almost a companion talk to this topic.
I've never use clojure directly in any production work, but every one of his talks have influenced a ton of my programming in other languages. I'm a bit sad he hasn't had any recent talks. Feels like they've exhausted the journey, like there's not much else to extract from the clojure mindset even though it feels like there's a lot more there.
He talked at clojure conj 2023, something like 'design, in practice'. Another great one. I think there was a gap in his keynotes because of covid. Also, it's very hard to write/talk about such profound ideas reliably every year- they just don't show up that often.
HA! I realize now that I had watched that live, paid the $20 to attend the conf virtually, then went a drinking binge so that I would forget I even saw it.