The ETTO Principle¶
Hollnagel, E. (2009). The ETTO Principle: Efficiency-Thoroughness Trade-Off: Why Things That Go Right Sometimes Go Wrong.
Cited by¶
1 citation across 1 artifact.
Each citation links to the sentence it supports in the citing article.
Mechanisms¶
- Slack-Erosion Guardrail
- A protected buffer that is never re-justified can ossify into true waste — the guardrail will faithfully defend slack no longer needed — and sizing the reserve is judgment-laden, so set too high it starves the efficiency the calm period could legitimately bank.
This sourceExplains that allocating effort between efficiency and thoroughness is context-dependent and necessarily judgment-laden.
- A protected buffer that is never re-justified can ossify into true waste — the guardrail will faithfully defend slack no longer needed — and sizing the reserve is judgment-laden, so set too high it starves the efficiency the calm period could legitimately bank.
Verification¶
Does it exist? Not checked yet. This entry carries no identifier to resolve. It was extracted from the citation as written in the article, normalized, and deduplicated against the rest of the registry.
Does it back the claim? Not recorded. The single citation of this work carries no recorded support check.
Support is checked per citation rather than per work — the same source can be cited soundly in one article and wrongly in another. Per-citation recording began recently, so a citation with no recorded check is a gap in the record rather than evidence it went unchecked.
See how references were verified.
Registry ID ref:47f85959e034 · see in the full table