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| Criterion |  Operations 5 Whys |  Innovation Rapid Ideation |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | 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. | When a decision needs to be prepared quickly, the method generates many solution-close variants in a short time. It deliberately relies on pace to undercut self-censorship and perfectionism. This quickly produces a usable field for prioritization and further work. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 15-30 min | 5-20 min | 45-90 min |
Participantsdifferent | 2-6 | 1-20 | 2-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Ideenpool, Roh-Shortlist, Cluster | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeIncidentLeanProblem solving | BrainstormingIdeationDivergenceSpeed | LeanProblem solvingCoachingOperations |
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