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| Criterion |  Engineering Fault Isolation |  Innovation TRIZ |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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 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. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 30-180 min | 1-4 h | 45-90 min |
Participantsdifferent | 1-6 | 2-8 | 2-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Contradiction Statement, Inventive Principles, Solution Concepts | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | TroubleshootingDiagnosisEngineering | InnovationProblem solvingContradictionsCreativity | LeanProblem solvingCoachingOperations |
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