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| Criterion |  Operations 5 Whys |  Innovation Reverse Brainstorming |  Innovation Design Charrette |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. | In a tightly timed design process with many participants, the method pools several lines of thinking in a short time. It brings parallel design energy without letting the discussion tip into endless coordination. This quickly produces solid directions for architecture or space. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 15-30 min | 30-60 min | Halber Tag bis mehrere Tage | 1-4 h |
Participantsdifferent | 2-6 | 3-12 | 10-50 | 3-8 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Reverse Ideas, Risk Themes, Solution Ideas | Sketches and Concepts, Consolidated Solution Sketch, Prioritized Direction | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | Root causeIncidentLeanProblem solving | BrainstormingIdeationCreativityRisk | BrainstormingWorkshopCollaborationIdeation | Root causeProblem solvingQualityIncident |