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| Criterion |  Innovation Brainstorming |  Operations A3 Problem Solving |  Operations 5 Whys |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. | 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. | 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. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 30-60 min | 45-90 min | 15-30 min | 2-8 h |
Participantsdifferent | 4-12 | 2-5 | 2-6 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Idea pool, Theme clusters, Shortlist | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | BrainstormingIdeationCreativityWorkshopDivergence | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations |