Five Whys Version A

Use the structure below to investigate the scenario.

Problem Boundary

State the problem being analyzed and what is in scope.

Observations

Record the observed evidence relevant to the incident.

Why Chain

Develop a plausible why chain from the observed problem.

Alternative Hypotheses

List other plausible explanations that should not be ignored.

Evidence for Each Why

Tie each why statement to available evidence or note missing evidence.

Confidence

Use categorical confidence only.

Verification

State what should be checked next to confirm or revise the analysis.