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| Criterion |  Product Discovery Kano Model |  Product Discovery Jobs to Be Done |  Engineering Fault Isolation |
|---|---|---|---|
Purposedifferent | When features need to be distinguished by their effect on satisfaction, it makes expectations and surprises comparable. It separates basic needs, performance contribution, and delight. | When switching motives and progress are unclear, it reconstructs the situation from real customer circumstances. It shows why a switch happens and what kind of progress is being sought. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-2 Tage | 1-3 Wochen | 30-180 min |
Participantsdifferent | 10-50 | 5-12 Interviews | 1-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Kano Matrix, Feature Classes, Priority Themes | Job Stories, Outcome Statements, Opportunity List | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | SatisfactionPrioritizationCustomer | CustomerOutcomesNeeds | TroubleshootingDiagnosisEngineering |
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