# Self-referential / Meta-conceptual
**Trait Number:** 22
**Layer:** Abstract
**Bit Position:** 6 (bit 22 overall)
**Binary Encoding:** `00000000 00000000 00000100 00000000`
**UHT Code (self-encoding):** `00 00 04 00`
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# Icon
![[Icon22.png|200]]
## Definition
The entity refers to **itself, its category, its context of use**, or the system it belongs to. It operates on a **meta-level**, describing or interacting with itself or the rules by which it is defined.
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## When to Apply
Use this trait when the entity:
- **References or modifies itself**
- Represents a **model, reflection, or abstraction of abstraction**
- Enables **introspection, self-description, or meta-analysis**
Avoid applying if the entity:
- Refers only to **external concepts or systems**
- Has **no access or relevance to its own definition or logic**
- Functions purely as **concrete or operational structure**
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## Examples
- A recursive function
- A data schema describing itself (e.g., JSON Schema)
- A code comment that explains how the code should be interpreted
- A philosophical system that critiques itself
- A training system that teaches how to learn
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## Commentary
This trait helps identify **entities that reflect on their own identity, structure, or process**. These may be used in **meta-programming, education, epistemology, and system architecture**.
Self-reference is a foundational concept in computation, cognition, language, and law. It also creates opportunities for **reflexivity and adaptive reasoning** — and pitfalls like paradox.
Use with care in modeling: this trait often signals a **higher-order semantic role**.
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