Steven Pinker's talk (reviewing downward-trending measures of human violence.) Those seemed pretty information-dense and covered topics that I didn't know much about.
But Pinker wrote a whole (excellent, highly recommended) book about that - was there anything new?
Sure, but I didn't read it! If I had to guess I doubt that much of it was new.
How was it? Which speakers delivered according to expectations?
Which topics were left unresolved?
Were any topics resolved?
Whatever you have to say about it, say it here.
Suggestion: if you are going to comment, mention "I was there" just so we know who was or wasn't.