5 Why · jasmink11 bundle Performs 5-Why root-cause analysis (RCA) from the Toyota Production System, tracing a problem through five why-questions in dialog until the actual cause — not the symptom — is found. Use when the user says root cause, RCA, postmortem, incident, retrospective, recurring bug, "why does this keep happening", 5 whys or 5w, or reports a defect or failure that keeps coming back. Also handles the what-for variant for sharpening goals or OKRs. Not for complex social systems with circular causality (team dynamics, feedback loops) — label results as hypotheses there.