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Criterion
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration for Failure Mode and Effects Analysis
Operations
Failure Mode and Effects Analysis
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.For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability.
Complexitydifferent
LowHigh
Timedifferent
45-90 min2-6 h
Participantsdifferent
2-83-10
Formatdifferent
Workshop + asyncWorkshop
Outputdifferent
Assumption List, Critical Assumptions, Learning PlanFMEA Table, Risk Priority, Mitigation Actions
Tags1 shared
AssumptionsRiskDecisionDiscovery
RiskQualityOperationsRoot cause
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Often compared together

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

Paper fishbone diagram with a measurable effect at the head and six labeled cause branches.
Operations
Fishbone Diagram
Paper illustration for Kepner-Tregoe
Operations
Kepner-Tregoe
Paper illustration for 8D Problem Solving.
Operations
8D Problem Solving
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping