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| Criterion |  Operations Bottleneck Analysis |  Operations 5 Whys |  Operations Kepner-Tregoe |  Operations Theory of Constraints |
|---|---|---|---|---|
Purposedifferent | For a flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput. | 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 a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | For a system that does not get faster despite effort, the method directs attention to the bottleneck. It concentrates improvement on the point that actually limits throughput. |
Complexitydifferent | Medium | Low | High | High |
Timedifferent | 1-3 h | 15-30 min | 2-8 h | 2-4 h Analyse, laufend |
Participantsdifferent | 3-8 | 2-6 | 2-8 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan | Constraint Map, Improvement Plan, Flow Metrics |
Tagsno overlap | FlowMeasurementConstraints | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations | OperationsConstraintsFlowImprovement |