A serial entrepreneur, engineer, and glassblower, Jim McKelvey is the co-founder of Square, a $35 billion company that changed the way businesses could get paid. Jim joins Adam to share his best lessons learned from Square's success and from his years building and studying other entrepreneurial ventures. Jim and Adam discuss how to start and build a successful business in a bad economy; how and when to compete and collaborate with Amazon; and lessons learned from preparing to present to Steve Jobs.