We had the opportunity to talk with many great entrepreneurs doing research for our book, The New Builders. I was struck by how thoughtful, determined, and gritty they were. As most readers know, the book focuses on entrepreneurs from a diverse set of backgrounds – people that truly represent the next generation of founders in the United States. One of the trends that we observe in the book is that the rate of entrepreneurship among older Americans is actually quite high. In fact, across a...