Consider how Scrum suggests how to start, learn, and improve. It starts in one place, learns via retros at end of a sprint and teams are to improve via figuring it out themselves.
Lean suggests started based on where you are along with learning and improvement methods that are continuous. It also provides many practices not in Scrum
Requiring certain practices or getting the response "then it's not Scrum" has detrimental side effects. We should
I consider that Dark Scrum
At Disciplined Agile (PMI) we believe that choosing your own way of working is important. The small amount of upfront decision making more than compensates for the large amount of coaching that otherwise will
For more on what I believe Scrum should look