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Criterion
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration for Constraint Analysis.
Decision Making
Constraint Analysis
Paper illustration for Causal Factor Analysis.
Operations
Causal Factor 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.When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped.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.
Complexitydifferent
LowLowHigh
Timedifferent
45-90 min30-90 min2-6 h
Participantsdifferent
2-82-83-10
Formatsame
Workshop + asyncWorkshop + asyncWorkshop + async
Outputdifferent
Assumption List, Critical Assumptions, Learning PlanConstraint List, Hard/Soft Classification, Option Impact Notes, Decision BoundariesEvent Timeline, Causal Factor Chart, Cause List, Corrective Actions
Tagsno overlap
AssumptionsRiskDecisionDiscovery
ConstraintsDecisionPlanningOptions
CausalityIncidentRoot causeTimeline
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration for Current Reality Tree
Systems Thinking
Current Reality Tree
A hypothetical failure makes concrete risks, signals, and fitting mitigations visible.
Decision Making
Pre-Mortem
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping