I just finished reading an interesting book called Invisible Influence: The Hidden Forces That Shape Behavior by Jonah Berger (Simon & Schuster, 2017). Professor Berger is a marketing professor at the Wharton School at the University of Pennsylvania. In this book, he explores two human tendencies that seem to be at odds with each other—the need for differentiation and the need for belonging. It seems to me that there are some useful lessons for law…