# button (tool)

a part that can be pressed to enable an action

- Computed level: L17 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: everyday  ·  Arena: physiological

## Emergence
**Emerges from:** [part](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-part.relation), [press](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-press.force), [click](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-click.mechanical), [action](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-action.deed), [enables](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-enables.facilitation)

**Through:** pressing the part causes a mechanical click and enables an action

**Novel properties:**
- tactile feedback
- action initiation
- discrete input

## Examples
- The red 'E-stop' button on a factory robot cuts power when pressed during malfunction. *(engineering)*
- The 'Like' button on Facebook's newsfeed triggers a thumbs-up action after user input. *(computing)*
- A doorbell chime sounds when the brass button by the front gate is pressed. *(everyday life)*

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