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Criterion
Paper illustration for Failure Mode and Effects Analysis
Operations
Failure Mode and Effects Analysis
Paper illustration for Evaporating Cloud.
Systems Thinking
Evaporating Cloud
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Purposedifferent
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.The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict.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
HighMediumLow
Timedifferent
2-6 h60-120 min45-90 min
Participantsdifferent
3-102-82-8
Formatdifferent
WorkshopWorkshopWorkshop + async
Outputdifferent
FMEA Table, Risk Priority, Mitigation ActionsConflict Cloud, Assumption List, Breakthrough Ideas, Next ExperimentsAssumption List, Critical Assumptions, Learning Plan
Tagsno overlap
RiskQualityOperationsRoot cause
Theory of ConstraintsAssumptionsSystems thinking
AssumptionsRiskDecisionDiscovery
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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