Typically, root causes identified by asking one or more "why" questions. Example: Why are we inspecting incoming components? Answer: Because some may be defective. Question: Why are w components? Answer: Because some components are judged to be defective by the inspection. Question: Why are some purchased components defective? Answer: our suppliers are not providing reliable components. the answers to the wly ons are obtained, then the answers to "how" are Example: do we improve the quality of incoming components? By questions identified suppliers that provide higher-quality components. The why ways the root questions enable management to identify improve. causes, and the how