The name A3 is actually in reference to the size of paper the report is placed on. This report collects all key pieces of information and allows users to review all key elements of improvement events/kaizen events on one piece of paper. From a philosophical standpoint A3 refers to a thinking process used by many lean and six sigma practitioners for solving problems or taking advantage of opportunities. The thought process is outlined above. To learn more about A3 thinking visit a recent post in our blog Listen to the Gemba titled The Size of your brain matters not, A3 will fit!