# balance (state)

A position where a parameter is between its walls, held by maintenance work to prevent drift toward a wall.

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

## 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), [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), [maintenance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-maintenance.upkeep), [held](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-held.grip), [position](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-position.spatial), [toward](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-toward.spatial), [work](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-work.effort)

**Through:** The components interact as follows: an aimless drift pushes the parameter, but maintenance effort counteracts it, gripping the parameter's position within the window bounded by walls, preventing movement toward either end.

**Novel properties:**
- sustained centering
- dynamic containment
- precarious stability

## Examples
- The International Space Station maintains attitude control using reaction wheels and occasional thruster firings to counter orbital perturbations. *(engineering)*
- Human blood pH hovers near 7.4, regulated by bicarbonate buffering and respiratory rate to avoid acidosis or alkalosis. *(biology)*
- The Federal Reserve adjusts interest rates to keep inflation near 2% annually, countering economic drift. *(economics)*

## Used by
- [equilibrium](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-equilibrium.state) (L16)

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