# rest (recovery)

A parameter whose window is such that maintenance is restored when drift returns it within the range.

- Computed level: L15 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: window  ·  Arena: emergence

## Emergence
**Emerges from:** [parameter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-parameter.condition), [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), [maintenance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-maintenance.upkeep), [range](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-range.spatial), [return](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-return.movement)

**Through:** parameter.condition, window.range, drift.aimless, maintenance.upkeep, range.spatial, and return.movement interact so that aimless change in a parameter can bring it back into a sustaining range, restarting maintenance.

**Novel properties:**
- maintenance resumption
- cyclic recovery
- range re-entry

## Examples
- The International Space Station maintains altitude through periodic reboosts after orbital decay drops it below 400 km. *(engineering)*
- Neurons return to -70 mV resting potential after firing, resetting ion gradients via sodium-potassium pumps. *(biology)*
- The 2011 Tohoku earthquake relieved stress along the Japan Trench, ending a 400-year segment of seismic quiescence. *(geophysics)*

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