Determinism Model

ChatPDM is built on deterministic execution.

Core Rule

Same input → same output

This holds under:

• fixed concept set
• fixed version
• fixed contracts

Why this matters

Most systems:

• generate responses probabilistically
• vary output across runs
• drift in meaning

ChatPDM:

• does not generate
• does not vary
• does not improvise

No Generation

Meaning is authored before runtime.

The system:

• selects
• validates
• returns

It does not:

• infer
• guess
• extend meaning

Refusal as a Feature

If a query cannot be resolved:

• the system refuses

This prevents:

• false precision
• semantic drift
• invented answers

Boundary Enforcement

Determinism requires a closed world.

The system only operates inside:

• authored concepts
• declared contracts

Everything else is rejected.