# Object Model

Use this model when designing or operating a vault as a persistent LLM wiki.

## Main Axis

### Questions

Use for recurring user problems.

A good question page answers:

- what is the problem
- why it matters
- which methods apply
- which decisions constrain the answer
- which sources support it

### Methods

Use for stable ways of doing something.

A good method page includes:

- definition
- applicable scenario
- standard steps
- common pitfalls
- related questions
- sources

### Decisions

Use for choices that need rationale.

A good decision page includes:

- background
- options
- tradeoffs
- conclusion
- reuse condition
- sources

## Explanation Layer

### Principles

Use for "why this stays true across situations."

Promote principles only when they explain more than one nearby method or decision, or when they capture a durable invariant in the system.

### Concepts

Use for concept boundaries, terminology, and abstraction support.

### Entities

Use for people, companies, projects, tools, or platforms that matter repeatedly.

## Evidence Layer

### Sources

Use for summaries of raw material.

A source page is the bridge between raw notes and formal knowledge. It should not try to be both evidence and final conclusion.

## Derived Layer

### Outputs

Use for reusable answers, syntheses, comparison tables, and analysis deliverables created during query work.

Outputs are not automatically formal pages, but they often become future source material for promotion.

## Main Principle

Do not let raw material, source summaries, formal conclusions, and query outputs collapse into the same page type.