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| Criterion |  Systems Thinking Theory of Constraints Thinking Process |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | The Theory of Constraints Thinking Process exposes a system's bottleneck and the logic behind it. It suits situations where many symptoms trace back to the same limiting relationship. | 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 | High | Low | High |
Timedifferent | 0.5-3 Tage | 15-30 min | 1-6 Wochen |
Participantsdifferent | 4-10 | 2-6 | 4-10 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Current Reality Logic, Conflict Cloud, Future Reality Tree, Implementation Obstacles | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Theory of ConstraintsConstraintsSystems thinkingCausality | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |
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