Kevin Dutton, The Wisdom of Psychopaths

The main take-away from Kevin Dutton's exploration of psychopaths is that many of the qualities they exhibit—ruthlessness, lack of anxiety, mental toughness, focus—are beneficial to society under certain circumstances and in the right doses. Psychopaths, that is, aren't just great serial killers, they also make killer spies and surgeons and special forces troops. The book often goes into more detail about specifics than I found interesting, and the names of various researchers certainly didn't stick. So, only intermittently interesting to me. The second take-away is that one should never, ever hitchhike.