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| Criterion |  Decision Making Constraint Analysis |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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. |
Complexitydifferent | Low | Low | High |
Timedifferent | 30-90 min | 15-30 min | 1-6 Wochen |
Participantsdifferent | 2-8 | 2-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ConstraintsDecisionPlanningOptions | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |
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