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Criterion
Six paper cards show a person moving from a problem through a service flow to a completed outcome.
UX Design
Storyboarding
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Purposedifferent
When a usage scenario needs to become understandable early, it condenses situations, context, and flow into a legible sequence. It helps check concept ideas before anything gets built.Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it.
Complexitydifferent
MediumLow
Timedifferent
30-90 min45-90 min
Participantsdifferent
1-82-8
Formatsame
Workshop + asyncWorkshop + async
Outputdifferent
Storyboard, Concept Narrative, Testable AssumptionsAssumption List, Critical Assumptions, Learning Plan
Tagsno overlap
VisualizationConceptsSequencePrototype
AssumptionsRiskDecisionDiscovery
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Often compared together

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

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 of DIBB with its method-specific working model.
Product Strategy
DIBB
A hypothetical failure makes concrete risks, signals, and fitting mitigations visible.
Decision Making
Pre-Mortem
Red Teaming method illustration showing its working structure
Decision Making
Red Teaming