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| Criterion |  Innovation Double Diamond |  Operations Kepner-Tregoe |  Operations After-Action Review |  Operations 5 Whys |
|---|---|---|---|---|
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 disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | 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. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | Wochen bis Monate | 2-8 h | 20-45 min | 15-30 min |
Participantsdifferent | 3-12 | 2-8 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Problem Analysis, Decision Analysis, Risk Plan | Lessons learned, Action items, Event summary | Root cause notes, Countermeasures |
Tagsno overlap | ProcessDivergenceInnovation | Problem solvingRoot causeDecisionOperations | LearningOperationsImprovement | Root causeIncidentLeanProblem solving |