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| Criterion |  Operations 8D Problem Solving |  Innovation Morphological Analysis |  Operations 5 Whys |  Innovation TRIZ |
|---|---|---|---|---|
Purposedifferent | 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. | For a search for solutions with many degrees of freedom, a grid emerges for systematic combinations. The method separates features, variants, and exclusion criteria, so the space gets explored deliberately. | 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. |
Complexitydifferent | High | Medium | Low | High |
Timedifferent | 1-6 Wochen | 1-3 h | 15-30 min | 1-4 h |
Participantsdifferent | 4-10 | 2-8 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Morphological Box, Concept Combinations, Idea Shortlist | Root cause notes, Countermeasures | Contradiction Statement, Inventive Principles, Solution Concepts |
Tagsno overlap | QualityProblem solvingRoot cause | IdeationInnovationCreativity | Root causeIncidentLeanProblem solving | InnovationProblem solvingContradictionsCreativity |