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Criterion
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration for Impact Filter
Decision Making
Impact Filter
Purposedifferent
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.With new ideas or requests, the conversation often turns to solutions too early and to effect too little. An Impact Filter forces the initiative into an effect perspective and checks whether it creates a relevant difference.
Complexitysame
LowLow
Timedifferent
45-90 min20-45 min
Participantsdifferent
2-81-6
Formatsame
Workshop + asyncWorkshop + async
Outputdifferent
Assumption List, Critical Assumptions, Learning PlanImpact Filter, Success Criteria, Next Step
Tags1 shared
AssumptionsRiskDecisionDiscovery
ImpactOutcomesFramingDecision
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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
Paper illustration of Lean UX Canvas with its method-specific working model.
UX Design
Lean UX Canvas
Paper illustration of Opportunity Scoring with its method-specific working model.
Product Discovery
Opportunity Scoring