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| Criterion |  Product Discovery Dual-Track Agile |  UX Research Affinity Diagramming |  UX Research User Interviews |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When uncertainty and delivery run in parallel, it separates learning work from implementation while keeping both connected. It prevents unvalidated ideas from falling directly into the delivery stream. | 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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 | Low | Low | Low |
Timedifferent | Laufend, Wochen bis Monate | 45–90 min | 30–60 min per interview | 15-30 min |
Participantsdifferent | 4-10 | 3-10 | 1 participant per interview | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Discovery Backlog, Delivery Backlog, Experiment-Ergebnisse, Validierte Stories | Theme clusters, Insight statements, Opportunity areas | Interview Notes, Themes, Insight Summary | Root cause notes, Countermeasures |
Tagsno overlap | AgileDiscoveryDelivery | SynthesisQualitativeRoot cause | QualitativeResearchCustomerDiscovery | Root causeIncidentLeanProblem solving |