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Selected:Kano ModelARID (Active Reviews for Intermediate Designs)Hypothesis-Driven Troubleshooting5 Whys
| Criterion |  Product Discovery Kano Model |  Architecture ARID (Active Reviews for Intermediate Designs) |  Engineering Hypothesis-Driven Troubleshooting |  Operations 5 Whys |
|---|---|---|---|---|
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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | 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 | 1-2 Tage | 2–4 h review as a planning range; preparation and evaluation additional | 30-240 min | 15-30 min |
Participantsdifferent | 10-50 | Designers, developers as users, and facilitation | 1-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Kano Matrix, Feature Classes, Priority Themes | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Root cause notes, Countermeasures |
Tagsno overlap | SatisfactionPrioritizationCustomer | ArchitectureEngineeringFeedbackValidationTasks | TroubleshootingProblem solvingDiagnosis | Root causeIncidentLeanProblem solving |