# Coherence
## Summary
Coherence is the quality of internal consistency and meaningful alignment across parts of a system, idea, or identity.
## Definition
Coherence refers to the presence of logical or intuitive harmony between elements—whether in thought, communication, behavior, design, or structure. It often implies an invisible thread that makes a whole feel intelligible or purposeful. In epistemology, coherence is one model of truth (coherence theory), while in storytelling or self-development, it's a sign of resonance and integration.
## Properties
- **Consistency across parts**: Coherence shows up when pieces align without contradiction.
- **Sense-making**: Coherent systems or narratives make intuitive or logical sense.
- **Pattern recognition**: We often feel coherence before we can explain it.
- **Vulnerability to fragmentation**: A single dissonant element can disrupt perceived coherence.
## Related Ideas
- Narrative integrity
- Systems thinking
- Cognitive dissonance
- Alignment vs. fragmentation
- Epistemic justification (coherence theory of truth)