Their dialogue can be found here. Every time that I have seen a video of Robin Hanson or Tyler Cowen versus anybody they have dominated the conversation, so I was naturally excited to see these two giants spar. Tyler had a sly smile on his face for much of the hour, and Robin often sported an incredulous look. I call them by their first names although I have never met either of them because when you read somebody's blog for long enough you come to believe that you know them. Here are some notes and reactions: