Agility means adaptability. First and foremost with regard to the product being developed. Step by step, usable interim products are created, which help to explore the problem domain and the possible solutions. However, adaptability not only covers the product, but also the way the team works. “At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly.” Among the Principles behind the Agile Manifesto this is one of the most important. Agility is therefore much more than just a method, but rather means taking responsibility for the product as well as the way people work together. However, especially the latter requires the right stance to be successful and not to end up in blaming. It is exactly this stance that Norman L. Kerth beautifully described as the Prime Directive in his book “Project Retrospectives: A Handbook for Team Reviews” (Amazon Affiliate Link).