# best practice (standard)

*Ordinarily means:* a proven way of doing something well

a model that was once good enough to stay inside the window but now reports only that the wall has moved

- Computed level: L17 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: practice  ·  Arena: the moving wall

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

**Through:** self-model

**Novel properties:**
- drift.aimless

## Examples
- The Therac-25 radiation therapy machine relied on software checks once deemed sufficient, until hardware faults it couldn't detect caused lethal overdoses. *(engineering)*
- New York City's 1916 zoning resolution formalized setbacks to allow light, becoming a 'best practice' even as skyscraper density outgrew its assumptions. *(institutions)*
- The Linux 2.4 kernel's O(1) scheduler was standard for years, though it failed to adapt to desktop interactivity demands on multicore systems. *(computing)*

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