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Criterion
Paper illustration for Risk Storming.
Architecture
Risk Storming
Paper illustration for Causal Factor Analysis.
Operations
Causal Factor Analysis
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping
Purposedifferent
Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog.For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events.When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent
LowHighMedium
Timedifferent
60-90 min2-6 h45-60 min
Participantsdifferent
4-123-102-8
Formatdifferent
WorkshopWorkshop + asyncWorkshop + async
Outputdifferent
Annotated Diagram, Prioritized Risk List, Action BacklogEvent Timeline, Causal Factor Chart, Cause List, Corrective ActionsAssumption map, Test backlog, Risk ranking
Tagsno overlap
RiskArchitectureWorkshopValidation
CausalityIncidentRoot causeTimeline
AssumptionsRiskExperimentsValidation
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Often compared together

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

Paper illustration of Riskiest Assumption Test with a method-specific labelled workspace.
Product Discovery
Riskiest Assumption Test
Design sheets and interface cards connect to jointly written pseudocode with highlighted unresolved questions.
Architecture
ARID (Active Reviews for Intermediate Designs)