Tom Eisenmann is the Howard H. Stevenson Professor of Business Administration at the Harvard Business School; Peter O. Crisp Chair of Harvard Innovation Labs; and faculty co-chair of the HBS Rock Center for Entrepreneurship, the Harvard MS/MBA Program, and the Harvard College Technology Innovation Fellows Program. In this conversation with Stanford professor Tom Byers, he shares insights from his book “Why Startups Fail: A New Roadmap for Entrepreneurial Success” (Currency, March 2021), which analyzes common patterns that sink both early- and late-stage startups, and also proposes a road map for deciding when to pull the plug and how to fail better.