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| Criterion |  Operations A3 Problem Solving |  Decision Making Delphi Method |  Product Strategy DIBB |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | 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 | 45-90 min | 1-4 Wochen | 1-2 h | 15-30 min |
Participantsdifferent | 2-5 | 6-30 Experten | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Expert Forecast, Consensus Range, Assumption Notes | DIBB document, Belief list, Bet list, Learning report | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | ForecastingExpertsDecisionStrategy | StrategyDecisionAssumptionsHypothesis | Root causeIncidentLeanProblem solving |