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| Criterion |  Operations A3 Problem Solving |  Innovation Design Sprint |  Innovation Crazy 8s |  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 the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. | With only a few minutes available and a still-fuzzy solution search, the method forces a wide range of variants. It produces fast sketches before the first idea can settle in, making different directions directly comparable and open to further development. | 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 | 4-5 Tage | 8-15 min | 15-30 min |
Participantsdifferent | 2-5 | 5-8 | 1-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Prototype, Test Findings, Decision Rationale | Sketch Set, Idea Shortlist, Direction Options | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | Design sprintPrototypeValidationInnovation | BrainstormingSketchingSpeedDivergenceDesign sprint | Root causeIncidentLeanProblem solving |