# no room for error (threshold)

*Ordinarily means:* There is no tolerance for mistakes.

The distance between the current parameter and the wall has become zero, so any deviation ends the thing even if the deviation is usual.

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

## Emergence
**Emerges from:** [wall](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-wall.range-end), [parameter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-parameter.condition), [drift](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-drift.aimless), [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range), [maintenance](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-maintenance.upkeep)

**Through:** emergence.components

**Novel properties:**
- window
- wall
- drift
- maintenance
- parameter

## Examples
- The Therac-25 radiation therapy machine delivered lethal overdoses when software ignored error codes due to race conditions. *(engineering)*
- In 2003, Columbia's final re-entry failed when a piece of foam disrupted the thermal protection system during launch. *(aerospace)*
- Knight Capital's $460 million loss in 45 minutes occurred after new trading software executed unintended orders. *(economics)*

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-no-room-for-error.threshold*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-no-room-for-error.threshold.json*  
*Every definition provably resolves to space, time, energy and pattern.*