Does anyone know where/when this talk was given? It looks fairly similar to another one Rich Hickey gave at QCon 2012 on Datomic, with a transcript and link to

Does anyone know where/when this talk was given? It looks fairly similar to another one Rich Hickey gave at QCon 2012 on Datomic, with a transcript and link to video for that talk available here: https://github.com/matthiasn/talk-transcripts/blob/master/Hickey_Rich/DeconstructingTheDatabase.md https://github.com/matthiasn/talk-transcripts/blob/master/Hi... but note that the slides and talk are not identical to that one, and that recording is missing a few minutes at the beginning.