Guess what. Toyota uses the waterfall method for software development – and now they’re trying to figure out how to go Lean. Surprised? So was I! My lean study tour to Japan in April 2009 One of the core tenets of Lean Thinking is Genchi Genbutsu – go and see for yourself. After years of experimenting with how to apply Lean principles in software development I decided to apply Genchi Genbutsu and