When value stream mapping it is important to identify areas of waste that exist in the process. The pneumonic device WIDETOM may be used to remember the different forms of muda (or waste). What does the I in WIDETOM stand for with respect to waste?
Explanation:Value stream mapping is a lean manufacturing analysis technique adopted by agile. A value stream map may be used to analyze the flow of information or materials from origin to destination to identify areas of waste. The identified areas of waste are opportunities for process improvement. Waste can take many forms and can be remembered using the pneumonic device WIDETOM. W - waiting; I - inventory; D - defects; E - extra processing; T - transportation; O - overproduction ; M - Motion. A value stream map is typically mapped or charted collaboratively with a team so it may define and view the entire process together, pinpointing areas of waste within the process. Processes that add value (processing of a part or feature) are generally referred to as “value-added” and processes that do not (e.g., waiting for a part to arrive) are generally referred to as “non value-added.” Generally speaking, one wants to reduce, to the largest extent possible, the non value-added time (i.e., areas of waste). [Lean-Agile Software Development: Achieving Enterprise Agility. Alan Shalloway, Guy Beaver, James R. Trott.] [Value stream analysis]