You can read about aerodynamics, but it won't teach you how to fly. You can, however, learn how to fly in a flight simulator. It is a risk free environment where pilots-to-be can make wrong decisions without damaging expensive equipment or causing loss of life.  Playing Lean is a flight simulator for innovation and Lean Startup. It's an enjoyable board game where players are forced to make difficult choices without risking their life savings or the future of their workplaces. The worst case scenario is a humiliating defeat at the hands of your colleagues (quite scary, actually). Playing Lean is a new physical board game designed to teach the concepts and mechanics of Lean Startup in a class or workshop setting. Playing Lean was awarded the Nordic Crowdfunding Alliance "Best Norwegian Crowdfunding Campaign Award" in the Educational Products and Services category 2016.