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Criterion
A 5 Whys working surface connects an observable problem with evidenced causes, marked uncertainty and concrete countermeasures with ownership.
Operations
5 Whys
Three Amigos method illustration showing its working structure
Agile
Three Amigos
Purposedifferent
For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description.When story, test, and implementation could drift apart, it brings business perspective, engineering, and quality together early. It prevents a story from being read differently only late in the process.
Complexitysame
LowLow
Timesame
15-30 min15-30 min
Participantsdifferent
2-63
Formatdifferent
WorkshopWorkshop + async
Outputdifferent
Root cause notes, CountermeasuresClarified Story, Test Examples, Open Questions
Tagsno overlap
Root causeIncidentLeanProblem solving
CollaborationBehavior-Driven DevelopmentQualityRefinement
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration for Root Cause Analysis.
Operations
Root Cause Analysis
Paper illustration for 8D Problem Solving.
Operations
8D Problem Solving
Paper illustration for Root Cause Tree Analysis
Operations
Root Cause Tree Analysis
A3 Problem-Solving workspace showing the question, observations, and next decision.
Operations
A3 Problem Solving