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| Criterion |  Innovation Double Diamond |  Operations 5 Whys |  Innovation TRIZ |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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 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 technical contradictions or trade-offs, the method looks for solutions that resolve opposing requirements at the same time. It translates limits into an explicit picture of conflict that becomes workable. This produces not just compromises but more elegant principles. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Medium | Low | High | High |
Timedifferent | Wochen bis Monate | 15-30 min | 1-4 h | 1-6 Wochen |
Participantsdifferent | 3-12 | 2-6 | 2-8 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Root cause notes, Countermeasures | Contradiction Statement, Inventive Principles, Solution Concepts | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ProcessDivergenceInnovation | Root causeIncidentLeanProblem solving | InnovationProblem solvingContradictionsCreativity | QualityProblem solvingRoot cause |