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| Criterion |  Product Discovery Opportunity Interview |  Knowledge Modeling IBIS |  Product Discovery Problem Interview |  Decision Making Argument Mapping |
|---|---|---|---|---|
Purposedifferent | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | 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. | When statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 30-60 min je Interview | 1-3 h | 30-60 min je Interview | 1-3 h |
Participantsdifferent | 5-12 Interviews | 2-8 | 5-12 Interviews | 1-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Opportunity Themes, Customer Quotes | Issue Map, Positions, Argument Notes | Problem Evidence, Risk Notes, Customer Segments | Argument Map, Evidence Gaps, Decision Rationale |
Tagsno overlap | DiscoveryInterviewsOpportunityCustomer | RationaleKnowledgeDecision | DiscoveryInterviewsValidation | SensemakingDecisionRationale |