Kaizen is about making positive change, not talking about it. Therefore, the proof that you have completed a kaizen event successfully is the positive evidence (data). As John likes to put it, “Show me the data! First prove there is a problem or opportunity, and then prove you did something about it.” One way to do this is to use DMAIC, a proven problem-solving model that guides and aligns the team throughout the improvement process. Here is a look at DMAIC and how to use it wisely with kaizen.