# notice (perceptual)

to see something and know it is there

- Computed level: L8 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: action.deed  ·  Arena: notice

## Emergence
**Emerges from:** [see](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-see.visual), [know](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-know.cognitive)

**Through:** seeing supplies the sensory pattern while knowing evaluates it as present, together producing awareness

**Novel properties:**
- awareness of presence
- subjective acknowledgment

## Examples
- A sentry at Hadrian's Wall spots a figure moving in the mist at 3 AM and alerts the garrison. *(institutions)*
- The Mars rover Perseverance detects a white mineral vein on a rock face in Jezero Crater. *(engineering)*
- A mother recognizes her infant's cry instantly in a crowded hospital ward. *(everyday life)*

## Used by
- [feel](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-feel.sensory) (L11)
- [red flag](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-red-flag.warning) (L16)

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