This is an incredible retrospective on where the Internet has been - and where it could go if we're not careful. This is a MUST read for all technology professionals.
I saw people taking pictures, but there's a nice set of gestures and conventions in place for that. You lift your camera or phone when you want to record, and people around you can see that. All in all, it works pretty smoothly.
I realized how long it had been since I looked at a new technology with wonder, instead of an automatic feeling of dread.
The flotsam and jetsam of a techie mind...