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| Criterion |  Product Discovery Problem Interview |  Operations Barrier Analysis |  Product Discovery Concierge MVP |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | When an idea can first fail or grow through genuine hands-on support, it relies on manual work instead of automation. It shows whether user value holds up even under manual execution. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-60 min je Interview | 2-4 h | 1-4 Wochen | 15-30 min |
Participantsdifferent | 5-12 Interviews | 2-6 | 3-10 Kunden | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Concierge Learnings, Service Blueprint, MVP Risks | Root cause notes, Countermeasures |
Tagsno overlap | DiscoveryInterviewsValidation | Root causeSafetyIncident | MVPValidationServiceDiscovery | Root causeIncidentLeanProblem solving |