# identity (self)

A self-model that stays within its own window while the parameters it represents undergo drift.

- Computed level: L15 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: emergent  ·  Arena: self

## Emergence
**Emerges from:** [window](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-window.range), [drift](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-drift.aimless), [parameter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-parameter.condition), [model](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-model.representation), [self-model](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-self-model.reflexive), [persist](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-persist.continue), [time](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-time.dimension), [self](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-self.personal)

**Through:** A self-model persists through time within a bounded range, representing a changing self despite aimless parameter drift.

**Novel properties:**
- enduring self-representation
- bounded parameter drift
- reflexive persistence

## Examples
- The International Space Station maintains its operational identity despite continuous micro-meteoroid damage and crew rotations since 1998. *(engineering)*
- The U.S. Constitution retains its legal identity through amendments and reinterpretations, persisting through 27 formal changes since 1789. *(institutions)*
- A person continues to recognize themselves in mirrors over decades, even as their face ages and neural patterns shift. *(biology)*

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