Applying the 5 Whys method with a deeper problem understanding has been a common practice for several decades, primarily within the context of the Lean and Six Sigma methodologies. This problem-solving technique involves repetitive questioning of a question to drill down to the root cause of an issue.
To properly apply the 5 Whys method, it is vital to observe and request follow-up questions in the most neutral perspective possible. Each next question also needs to delve more under the surface of the issue observed, generally assuming that the final question's answer represents the root cause of the observed problem.
The process optimization an waste reduction of 5 Whys question-asking usually initiates with a major complaint presented by a team member, a customer, or some outside event. The method views this primary complaint "{The 1st Why|The Initial Inquiry|The Primary Question." The problem needs to be analyzed, and a deeper understanding of the situation has to be gained.
