@fellshard that was the Remote Agent spacecraft control system, the story is mentioned in http://www.flownet.com/gat/jpl-lisp.html

Recently I watched Rich's 2009 "Persistent Data Structures and Managed References" (to edit some on-line transcripts of his talks). He talks about the epochal time model in a lot of his talks, but I found this early one had a way of explaining the managed references that was a bit more in depth and had a couple more examples that "clicked" for me this time.

Yes, I am slow 🙂

I was always ruined for relishing development on big C code bases, but I'm getting more and more likely to ever (EDIT: I mean never) go anywhere near that again.

@andy.fingerhut lol, wow, I've never seen this talk

Rich apparently gave N talks in 2012, where I don't even know how big N is, but I think it is over 10.

Some with significant overlap.