# existence (state)

occupancy of a window

- Computed level: L8 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: abstract  ·  Arena: ontology

## Emergence
**Emerges from:** [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range)

**Through:** The range of a parameter and the structure of an opening together determine whether something is present within a bounded region.

**Novel properties:**
- presence within bounds
- structural containment
- bounded persistence

## Examples
- The International Space Station maintained orbit at 400 km for over 25 years through periodic reboosts from visiting spacecraft. *(engineering)*
- The U.S. Constitution has remained in force since 1789, structuring governance through amendments and judicial interpretation. *(institutions)*
- A superconducting magnet at CERN sustains a persistent current in a closed niobium-tin coil at 1.9 K for years. *(physics)*

## Used by
- [alive](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-alive.biological) (L15)
- [buffer](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-buffer.region) (L13)
- [delicate](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-delicate.window) (L13)
- [exhaustion](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-exhaustion.capacity) (L15)
- [factor of safety](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-factor-of-safety.margin) (L15)
- [pressure](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-pressure.ontological) (L18)
- [repair](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-repair.restore) (L15)
- [stress](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-stress.condition) (L13)

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