Invariant Systems performs structural diagnostics on adaptive systems using behavioural evidence only. The method is designed to determine regime class and identify the boundaries of valid inference.
Structural properties of adaptive systems are observable through behaviour: decision traces, feedback dynamics, response to perturbation, and temporal coupling with environment.
Access to internals is not required to classify regime stability or detect drift. Requests for internals are treated as diagnostically meaningful, but not necessary.
The audit does not predict outcomes, optimise performance, or recommend interventions. It classifies the operating regime and identifies where inference becomes unreliable or invalid.
Where a system cannot be made reliable under current coupling, that impossibility is reported explicitly.
The primary output of the audit is a boundary map: what cannot be safely inferred, optimised, or relied upon given the evidence provided.
Claims that cannot be grounded within these boundaries are not made.
This method prioritises epistemic integrity over explanatory completeness. Where certainty is not justified, boundaries are drawn instead.
The goal is not to be helpful at all costs, but to be correct about what can and cannot be known.