I've posted a followup on my blog at http://tom.preston-werner.com/2010/10/18/optimize-for-happiness.html that covers some of the ideas I introduced in more detail.
Since I only had about 25 minutes for the talk and 5 minutes for questions, I wanted to make myself available for additional questions. So today I'll be answering any questions you have here on Hacker News.
Ask away!