# Perceptible
**Trait Number:** 6
**Layer:** Physical
**Bit Position:** 6
**Binary Encoding:** `00000100 00000000 00000000 00000000`
**UHT Code (self-encoding):** `04 00 00 00`
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# Icon
![[Icon6.png|200]]
## Definition
The entity can be **directly detected through sensory input**, whether by human senses or sensory instruments. It is observable, measurable, or otherwise available to perception.
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## When to Apply
Use this trait when the entity:
- Can be **seen, heard, touched, smelled, or measured**
- Has features that are accessible to a **sensor or observer**
- Emits signals, has shape, or causes an effect that can be perceived
Avoid applying if the entity:
- Exists only **conceptually**, **symbolically**, or **virtually** without expression
- Requires inference or indirect reasoning to detect
- Has no observable manifestation or trace
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## Examples
- A flashing light
- A physical book
- A tone produced by a speaker
- A heartbeat detected by a stethoscope
- The scent of a flower
- A touchscreen interface
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## Commentary
Perceptibility defines an **interface to the world** — something becomes perceptible when it **crosses into awareness**, whether by biological senses or technological means.
Some entities (e.g., an electric field or a gene) may be *perceptible indirectly* through instruments, and still qualify. The key distinction is whether **the entity has detectable form or signal**, as opposed to being completely abstract or latent.
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**© 2025 Steven Holland. All rights reserved.**
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