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| Criterion |  Product Discovery Solution Interview |  UX Research Affinity Diagramming |  Operations Fishbone Diagram |  UX Research Empathy Mapping |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 30-60 min je Interview | 45–90 min | 30-60 min | 30–60 min |
Participantsdifferent | 5-10 Interviews | 3-10 | 2-8 | 4-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Theme clusters, Insight statements, Opportunity areas | Fishbone Diagram, Cause Categories, Investigation Backlog | Empathy Map, Assumptions List, Research Gaps |
Tagsno overlap | ValidationInterviewsPrototype | SynthesisQualitativeRoot cause | Root causeQualityOperations | SynthesisQualitativeWorkshop |