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| Criterion |  Operations 5 Whys |  Operations 8D Problem Solving |  Innovation Design Charrette |
|---|---|---|---|
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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 15-30 min | 1-6 Wochen | Halber Tag bis mehrere Tage |
Participantsdifferent | 2-6 | 4-10 | 10-50 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Sketches and Concepts, Consolidated Solution Sketch, Prioritized Direction |
Tagsno overlap | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause | BrainstormingWorkshopCollaborationIdeation |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
