I just finished The Invisible History of the Human Race: How DNA and History Shape Our Identities and Our Futures by Christine Kenneally. Kenneally examines how recent advances in science have changed our understanding of history and of people. While DNA and genetic genealogy play a prominent role, they are far from the only subjects covered in this book. One topic that caught my attention was economists' Nathan Nunn and Leonard Wantchekon's research on how the slave culture in Africa caused a climate of distrust that had lingered for centuries and was still stifling economic development to this day. I couldn't help remembering all the times I've heard Mississippi people say they couldn't trust someone enough to go in business with them, and I wondered if a similar study had been done on how a similar culture of mistrust might be inhibiting economic development in the South.