One of the speakers is running late and joins the discussion at about 15 minutes in...so the discussion starts out a bit slowly, but then becomes really interesting... You'll need about 1 hour 50 mins to complete it, but you may learn something. :)
[video=youtube;kE3sXCxwvWg]http://www.youtube.com/watch?v=kE3sXCxwvWg[/video]