The webcast stream link ran fine on both my office WIN 7 PC and iMAC Pro desktop running Firefox, but wouldn't run on Safari on my MacBook Pro under Mavericks - the latest version approved for our Enterprise network. It was a UStream public webcast, so likely using a Flash stream for desktops/notebooks.
I had actually walked over to see the event live in the Warner Bros Theater, but was immediately sidetracked to help out a News crew who was having difficulty receiving the audio feed from a Mult box(press feed). I sometimes do technical work for the theater, so the staff assumed that I was working when I arrived, which I was not. The theater's tech director and separate av crew doing the webcast streaming had their hands full, and couldn't assist the News crew so helped out. My good deed of the day, but ended up missing the first 30 minutes of the discussion. In fact, left the theater and watched the rest of the live webcast stream back in my office.
I'll have to locate the link to watch the recorded UStream Webcast over again, but do believe that Vint did discuss the origins on how the Internet was eventually opened for public use.
