I was intrigued by the theories on what constitutes intelligence in this chapter, and specifically on the story of Christopher Langan. How can someone who has such highly-tested I.Q. end up working in a bar or on a farm (and be satisfied doing it)? And how does he feel about himself and what constitutes "intelligence"?
Here's some video of Langan's thoughts, and some of his thoughts on eugenics may be surprising (3 parts total):