# feedback (communication)

information that is sent back to the source about a change that occurred

- Computed level: L14 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: communication  ·  Arena: feedback

## Emergence
**Emerges from:** [information](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-information.knowledge), [send](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-send.communication), [source](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-source.origin), [change](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-change.process), [back](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-back.spatial), [occurs](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-occurs.event)

**Through:** information about a change is sent back to its source through communication.

**Novel properties:**
- directional return of information
- response to change
- closed communication loop

## Examples
- The thermostat in a home heating system switches the furnace off when the room reaches 22°C. *(engineering)*
- After the 2008 financial crash, banks reduced lending in response to rising loan defaults. *(economics)*
- In 1997, IBM's Deep Blue adjusted its chess strategy during Game 6 based on Kasparov's previous moves. *(computing)*

## Used by
- [blind](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-blind.unobserved) (L15)
- [delay](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-delay.timing) (L15)
- [despair](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-despair.state) (L15)
- [ecosystem](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-ecosystem.interdependent) (L15)
- [lag](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-lag.temporal) (L15)
- [regulation](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-regulation.control) (L15)
- [reputation](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-reputation.social-model) (L15)
- [shame](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-shame.emotional) (L15)
- [status](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-status.social) (L15)
- [surprise](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-surprise.reaction) (L15)

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