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| Criterion |  Operations Gemba Walk |  Systems Thinking Current Reality Tree |  Operations Kepner-Tregoe |
|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. |
Complexitydifferent | Low | High | High |
Timedifferent | 30-120 min | 2-6 h | 2-8 h |
Participantsdifferent | 2-6 | 3-8 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Current Reality Tree, Core Problems, Intervention Ideas | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | LeanObservationProcessOperations | Systems thinkingRoot causeConstraintsCausality | Problem solvingRoot causeDecisionOperations |
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