I think this is the same talk he gave at another NYC meetup a few months ago. The beginning of the talk is an interesting take on thinking about "processes" and

I think this is the same talk he gave at another NYC meetup a few months ago. The beginning of the talk is an interesting take on thinking about "processes" and "machines", in true Rich Hickey style. The later half of the talk involves some REPL exploration, which gives a good flavor of actually using the thing.