# marginal (spatial)

Near a wall, in the narrow band where small drift decides whether a thing persists though its parts remain.

- Computed level: L12 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: window ontology  ·  Arena: abstract spatial reasoning

## Emergence
**Emerges from:** [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range), [wall](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-wall.range-end), [drift](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-drift.aimless), [parameter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-parameter.condition), [narrow](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-narrow.spatial), [near](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-near.spatial), [small](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-small.size), [whether](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-whether.conditional), [persist](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-persist.continue), [part](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-part.relation)

**Through:** drift.aimless changes a parameter within a narrow.spatial range near a wall.range-end, where small.size variations determine whether.conditional persistence occurs within the window.range of allowable parameter.condition values, despite part.relation and persist.continue.

**Novel properties:**
- proximity to boundary
- fragility of persistence
- sensitivity to minor drift

## Examples
- The International Space Station maintains orbit just above atmospheric drag, requiring monthly reboosts to avoid decay. *(engineering)*
- In 1986, Chernobyl's Reactor 4 operated despite safety protocols failing in the control room's edge zone. *(institutions)*
- A sidewalk ice patch persists for hours in the narrow shadow of a building where sunlight barely reaches. *(everyday life)*

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