# sanity check (trust)

*Ordinarily means:* a quick review to make sure something makes sense

a moment when a self-model is tested against the model it holds, revealing whether trust in that model still fits within the window of coherence

- Computed level: L16 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: cognitive  ·  Arena: model and trust

## Emergence
**Emerges from:** [self-model](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-self-model.reflexive), [model](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-model.representation), [trust](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-trust.reliance), [coherence](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-coherence.state), [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range)

**Through:** internal

**Novel properties:**
- model-fit
- trust-boundary

## Examples
- The Hubble Space Telescope's gyroscope failures in 2018 triggered onboard mode switches that preserved minimal function until ground control verified safe orientation. *(engineering)*
- In 2008, the New York Stock Exchange halted trading of affected securities during the 'flash crash' when algorithmic prices diverged wildly from expected ranges. *(economics)*
- After the Mars Climate Orbiter burned up in 1999, NASA implemented unit-check protocols to verify metric consistency across engineering teams. *(computing)*

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-sanity-check.trust*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-sanity-check.trust.json*  
*Every definition provably resolves to space, time, energy and pattern.*