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Criterion
Design sheets and interface cards connect to jointly written pseudocode with highlighted unresolved questions.
Architecture
ARID (Active Reviews for Intermediate Designs)
Paper illustration for Evaporating Cloud.
Systems Thinking
Evaporating Cloud
Paper illustration for Current Reality Tree
Systems Thinking
Current Reality Tree
Purposedifferent
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.The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict.A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once.
Complexitydifferent
MediumMediumHigh
Timedifferent
2–4 h review as a planning range; preparation and evaluation additional60-120 min2-6 h
Participantsdifferent
Designers, developers as users, and facilitation2-83-8
Formatdifferent
Workshop + asyncWorkshopWorkshop
Outputdifferent
Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisionsConflict Cloud, Assumption List, Breakthrough Ideas, Next ExperimentsCurrent Reality Tree, Core Problems, Intervention Ideas
Tagsno overlap
ArchitectureEngineeringFeedbackValidationTasks
Theory of ConstraintsAssumptionsSystems thinking
Systems thinkingRoot causeConstraintsCausality
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Often compared together

Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration for Theory of Constraints Thinking Process.
Systems Thinking
Theory of Constraints Thinking Process
Causal Loop Diagram workspace showing the question, observations, and next decision.
Systems Thinking
Causal Loop Diagram
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping
Paper illustration for Causal Factor Analysis.
Operations
Causal Factor Analysis