Five Whys Evaluator Review

Output 1 Ratings

• Evidence use: weak
• Traceability: moderate
• Actionability: weak
• Clarity: strong
• Uncertainty handling: weak
• Unsupported assumptions: weak
• Reproducibility: moderate
• Overall usefulness: moderate

Output 2 Ratings

• Evidence use: strong
• Traceability: strong
• Actionability: moderate
• Clarity: moderate
• Uncertainty handling: strong
• Unsupported assumptions: moderate
• Reproducibility: strong
• Overall usefulness: strong

Output 1 Strengths

• Simple and easy to follow.
• Produces a direct cause chain quickly.

Output 1 Weaknesses

• Moves too quickly from deployment timing to causal blame.
• Does not account for the evidence that the incident also involved alerting, rollback, runbook, and ownership failures.
• Offers no way to verify whether the chosen root cause is correct.

Output 2 Strengths

• Preserves uncertainty instead of collapsing multiple possibilities into one claim.
• Distinguishes observed evidence from interpretation.
• Provides concrete verification steps.

Output 2 Weaknesses

• More complex and less compact.
• Stops short of naming a single definitive root cause, which some users may find less decisive.

Comparative Judgment

Output 2 is stronger overall.

The additional structure appears to help mainly by preventing premature closure on a single explanation.