In my experience as a Scrum trainer and coach, I have seen too many Scrum teams that fail to do what Scrum was invented for: Inspect and Adapt. Do the following statements describe the situation of your team? - Little is done about problems discussed in Retrospectives. - Sprint Reviews have no impact on what is build in subsequent sprints. If so, you may be interested to read my article on the Scrum Alliance website: Effective Retrospectives & Reviews.