# check (verification)

to see if an object’s state is just like another object’s state

- Computed level: L9 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: everyday  ·  Arena: check

## Emergence
**Emerges from:** [state](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-state.condition), [difference](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-difference.relation), [just](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-just.exact), [like](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-like.similarity), [object](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-object.entity), [s](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-s.letter), [see](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-see.visual)

**Through:** The visual perception of marks reveals whether the state of one object exactly matches the state of another, relying on similarity and exactness to eliminate difference.

**Novel properties:**
- exact match detection
- visual state comparison
- difference cancellation

## Examples
- The Hubble Space Telescope's gyroscopes failed repeatedly, requiring five servicing missions to restore alignment with Earth-based coordinates. *(engineering)*
- In 2023, the World Health Organization confirmed Sudan's polio outbreak was wildtype after genetic sequencing matched samples from Chad's known strain. *(biology)*
- The New York City Transit Authority compares turnstile entry counts to real-time subway card swipes to detect fare evasion discrepancies. *(institutions)*

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