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| Criterion |  Innovation Double Diamond |  Operations Kaizen Event |  Operations Learning 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 tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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 | Medium | Medium | Low |
Timedifferent | Wochen bis Monate | 0.5-5 Tage | 1-3 h | 15-30 min |
Participantsdifferent | 3-12 | 4-10 | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Learning Review Notes, System Factors, Improvement Actions | Root cause notes, Countermeasures |
Tagsno overlap | ProcessDivergenceInnovation | LeanContinuous improvementOperations | LearningRetrospectiveIncidentOperations | Root causeIncidentLeanProblem solving |