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| Criterion |  Operations 8D Problem Solving |  Operations Root Cause Tree Analysis |  Innovation TRIZ |  Innovation Contradiction Analysis |
|---|---|---|---|---|
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 problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. | When a system should improve while another measure suffers as a result, the method makes the underlying conflict precisely formulable. It separates the desired effect from its side effect. This makes solutions possible that address the contradiction deliberately instead of half-heartedly. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 1-6 Wochen | 1-3 h | 1-4 h | 60-120 min |
Participantsdifferent | 4-10 | 2-8 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Cause Tree, Evidence Notes, Countermeasures | Contradiction Statement, Inventive Principles, Solution Concepts | Contradiction Statement, Abstraction Notes, Solution Principles, Concept Ideas |
Tagsno overlap | QualityProblem solvingRoot cause | Root causeTreeIncidentQuality | InnovationProblem solvingContradictionsCreativity | ContradictionsInnovationProblem solving |