# coupling (connection)

When two things are joined so each can affect the other.

- Computed level: L6 (depth in the emergence graph, not abstraction)
- Status: draft  ·  Domain: physical

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

**Through:** Interaction occurs when two things touch, and each can change the other's state over time.

**Novel properties:**
- mutual influence
- synchronized change

## Used by
- [butterfly effect](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-butterfly-effect.amplification) (L14)

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