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| Criterion |  Operations 5 Whys |  Product Strategy ICE Scoring |  Operations ABC Analysis |  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 ideas need sorting quickly, it condenses impact, confidence, and effort into one compact score. It connects customer value, product logic, and decision priorities. The result is captured as an ICE table and top-ideas list. | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | 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 | Low | Medium |
Timedifferent | 15-30 min | 30-60 min | 30-60 min | 45-90 min |
Participantsdifferent | 2-6 | 2-8 | 1-5 | 2-5 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | ICE Table, Top Idea List | ABC Classification, Focus Rules, Control List | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeIncidentLeanProblem solving | PrioritizationScoringGrowthDecision | PrioritizationOperationsPortfolio | LeanProblem solvingCoachingOperations |