# cart (transport)

a container on wheels that is used to carry items

- Computed level: L16 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: everyday objects  ·  Arena: concept

## Emergence
**Emerges from:** [wheel](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-wheel.tool), [box](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-box.container), [carrying](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-carrying.transporting), [container](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-container.object), [items](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-items.object), [use](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-use.application)

**Through:** the wheels move and the container holds items so the whole can be moved

**Novel properties:**
- portable carrying capacity
- controlled mobility
- load retention during motion

## Examples
- The Mars Rover Perseverance transported rock samples in its internal sample cache container across Jezero Crater. *(engineering)*
- Walmart shopping carts moved customer purchases from aisles to checkout lanes in 4,700 U.S. stores in 2023. *(economics)*
- A wooden mine cart carried 800 pounds of coal through a 19th-century Pennsylvania colliery. *(history)*

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