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| Criterion |  Innovation Double Diamond |  Operations 5 Whys |  Operations Kepner-Tregoe |  Operations Gemba Walk |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | 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. | 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. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | Wochen bis Monate | 15-30 min | 2-8 h | 30-120 min |
Participantsdifferent | 3-12 | 2-6 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan | Observation Notes, Improvement Ideas |
Tagsno overlap | ProcessDivergenceInnovation | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations | LeanObservationProcessOperations |