Editorial draft available to read. Factual and language review is pending. Examples are illustrative.

Decision and scope

Separate the observed deviation, a working hypothesis and a confirmed cause. Events occurring at the same time do not by themselves establish causation. A useful report identifies supporting evidence, the person authorized to validate the explanation and a review date for hypotheses that remain unresolved.

Illustrative example

Illustrative example: output falls while a machine alarm is active, but material is also unavailable. The report records both observations and leaves the cause pending. After reviewing shift notes and event records, the supervisor attributes justified portions of lost time to the relevant factors and explains any period that cannot be allocated.

Acceptance check

Test overlapping events and default reason selections. Do not count overlapping time twice as independent losses. Accept the report when confirmed causes have inspectable evidence and unresolved hypotheses remain clearly distinguishable from established facts.

Key takeaways

  • Accept the report when confirmed causes have inspectable evidence and unresolved hypotheses remain clearly distinguishable from established facts.