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| Criterion |  Operations A3 Problem Solving |  Innovation Double Diamond |  Innovation Design Thinking |  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. | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | 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 | Medium | High | Low |
Timedifferent | 45-90 min | Wochen bis Monate | 1 Tag bis mehrere Wochen | 15-30 min |
Participantsdifferent | 2-5 | 3-12 | 4-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Problem Statement, Prototype, Test Learnings | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | ProcessDivergenceInnovation | InnovationPrototypeResearch | Root causeIncidentLeanProblem solving |