# permanence (enduring)

a window wide relative to every drift that can reach it

- Computed level: L13 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: window.range  ·  Arena: abstract

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

**Through:** A property emerges when a window's range is wide compared to all possible aimless changes (drifts) that could push a parameter beyond its boundary.

**Novel properties:**
- endurance against disruption
- relative spatial width
- boundary resilience

## Examples
- The Iguazú Falls have eroded the cliff edge 20 kilometers over 150,000 years, yet the waterfall remains continuous. *(geology)*
- The Voyager 1 probe still transmits data after 47 years, its trajectory unchanged beyond the heliosphere. *(spaceflight)*
- The Japanese Imperial succession has continued without interruption for over 1,700 years, per official records. *(institutions)*

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