# box (container)

a case that limits a space in which material is inside

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

## Emergence
**Emerges from:** [case](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-case.container), [boundary](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-boundary.limit), [material](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-material.physical), [inside](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-inside.spatial), [limit](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-limit.boundary), [space](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-space.extent)

**Through:** the case’s boundary limits a space that holds material

**Novel properties:**
- contained volume
- protected interior
- material containment

## Examples
- The Fukushima Daiichi reactor #1 contained radioactive fuel rods in zirconium alloy tubes during the 2011 meltdown. *(engineering)*
- A human skull encases the brain, maintaining cerebrospinal fluid within a rigid calcified boundary. *(biology)*
- The Bitcoin blockchain's 1MB block size limit constrained transaction throughput in 2017. *(computing)*

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

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