Watch the video response here: http://www.youtube.com/watch?v=-tsI_28O3Ws
This was posted here on lesswrong a while ago, but they recently uploaded a new version of the video and I took the liberty of typing up a transcript.
The video is fairly long, about 25 minutes. But it's incredibly engaging and I highly recommend watching it. For those who prefer text (because it's faster or because you are a computer), you can read the transcript in this google doc, or below in the comments. Enjoy!