Interesting article

Reading People’s Faces - Tattoos, dueling scars, and other rational acquisitions

Also, this paragraph reminds me so badly of Kirk:

Schelling’s 1960 book about the nuclear arms race, 'The Strategy of Conflict', centers around those paradoxical situations when it makes sense to impose limits on yourself in order to improve your negotiating position. His famous "madman theory" holds that a "careless or even self-destructive attitude toward injury... can be a genuine strategic advantage."