Evolutionary psychologist Bill Von Hippel shares a fascinating look at why our tribal past dictates our present day success.   He explores how to use social situations to achieve innovation and why some of us struggle in social situations, while others make even the most awkward encounters flow seamlessly. Bill von Hippel is Professor of Psychology at the University of Queensland, Australia. He serves on the editorial board of Personality and Social Psychology Bulletin, Social Psychological and Personality Science, Social Cognition, and is an associate editor Psychological Science.