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| Criterion |  Operations Change Analysis |  Product Discovery Assumption Mapping |  Architecture ARID (Active Reviews for Intermediate Designs) |
|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 45-120 min | 45-60 min | 2–4 h review as a planning range; preparation and evaluation additional |
Participantsdifferent | 2-6 | 2-8 | Designers, developers as users, and facilitation |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Assumption map, Test backlog, Risk ranking | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | AssumptionsRiskExperimentsValidation | ArchitectureEngineeringFeedbackValidationTasks |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
