Call me naive, but I listened the entire talk thinking it happened in 1973. Then came back and after seeing the discussion realized its an act.

So definitely my wonderment and awe of it came down by several notches, as I could see how every 1/2 minutes I was exclaiming in wonder of how relevant it was to today's time. But of course when you recreate the past in the future, you can be very selective towards ideas/topics which are relevant in some way.