# Fixed / static
**Trait Number:** 4
**Layer:** Physical
**Bit Position:** 4
**Binary Encoding:** `00010000 00000000 00000000 00000000`
**UHT Code (self-encoding):** `10 00 00 00`
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# Icon
![[Icon4.png|200]]
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## Definition
The entity is **unchanging in position, form, or internal state**. It is stable over time and does not move, adapt, or transform without external force.
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## When to Apply
Use this trait when the entity:
- Is physically or functionally static
- Maintains a consistent shape, structure, or behavior
- Has no autonomous or inherent change over time
Avoid applying if the entity:
- Moves, adapts, or shifts in space or structure
- Has internal state changes or dynamic function
- Is a process, signal, or behavior over time
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## Related Traits
- [[01 00 00 00 - Passive]] — Often overlaps; passive entities are typically static, but something can be static *and* have latent potential.
- [[00 10 00 00 Transforms or modifies internal state]] — Conceptual opposite; dynamic entities should not be marked as static.
- [[08 00 00 00 - Structural]] — Many structural elements are static, but not all; this trait focuses on lack of change.
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## Examples
- A concrete wall
- A statue
- A parked car
- A database schema (invariant without migration)
- A printed circuit board
- A geological formation
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## Commentary
This trait emphasizes **lack of internal or external change**. It includes both physical stillness (e.g. a fixed structure) and logical stasis (e.g. a frozen configuration or read-only schema).
Note that static does not mean *useless* or *unimportant* — many critical systems depend on static anchors or definitions. The key is whether the entity maintains its form or state without active transformation.
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