To Get To The Root Of A Hard Problem, Just Ask “Why” Five Times In The Lean Startup, Eric Ries argues that returning to the question of why five times cuts to the quick of a problem.

Eisenmann, Thomas, Eric Ries, and Sarah Dillard. "Hypothesis-Driven Entrepreneurship: The Lean Startup." Harvard Business School Background Note 812-095, December 2011. (Revised July 2013.) ...

How To Build An Entrepreneurial Culture: 5 Tips From Eric Ries The Lean Startup author sits down with Ideo U's Suzanne Gibbs Howard to discuss how to instill an entrepreneurial spirit in any ...

Eric Ries, author of the Startup Lessons Learned blog, is an entrepreneur and the creator of the lean startup methodology, a new-business strategy that calls for rapid prototyping and frequent ...