# required (obligation)

a condition that is a need

- Computed level: L6 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: everyday  ·  Arena: required

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

**Through:** when a need is attached to a condition, it creates a must

**Novel properties:**
- must status
- necessity label

## Examples
- The International Space Station requires continuous reboosts to counteract atmospheric drag and maintain orbit. *(engineering)*
- California's 2022 water restrictions required urban users to cut consumption by 15% amid drought conditions. *(institutions)*
- Human adults require approximately 7 to 9 hours of sleep per night for normal cognitive function. *(biology)*

## Used by
- [complex](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-complex.structured) (L18)
- [contradiction](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-contradiction.logical) (L11)
- [due](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-due.expected) (L9)
- [easy](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-easy.effort) (L7)
- [fine](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-fine.quality) (L7)
- [independent](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-independent.attribute) (L7)
- [necessary](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-necessary.obligation) (L7)
- [payment](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-payment.economic) (L17)
- [precarious](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-precarious.unstable) (L15)
- [requirements](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-requirements.obligation) (L7)
- [tax](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-tax.economic) (L18)
- [tipping point](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-tipping-point.irreversible) (L15)
- [verge](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-verge.edge) (L15)

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