According to this new paper , girls had the highest probability of surving the Titanic disaster. The authors claim that this extreme case study highlights that “selfishness” cannot explain this core fact. Why didn’t a higher percentage of prime age men survive? As you might remember, Dora Costa and I have published a paper about U.S Union Army soldiers’ survival probabilities in Confederate POW Camps. We document the role that social networks played in increasing survival probabilities. The role of social capital in non-market settings is a major theme of our 2008 book Heroes and Cowards.