Any idea if this was part of a talk that was given somewhere?

I don't know if it's identical, but many if not all of the slides are from here: http://www.infoq.com/presentations/Are-We-There-Yet-Rich-Hic...

I love this talk. Rich talks about the concept of time and identity and its importance in programming in general, and especially in concurrency. Good stuff. I was able to better appreciate clojure after watching this talk.