Twin fidelity and decision validity

A method that performs well on average may still fail at the tail. This note examines twin fidelity and decision validity with attention to stress cases, feasibility and operational control.

Practitioner lens

A responsible implementation of twin fidelity and decision validity includes a fallback policy, approval thresholds, model-version records and a way to explain infeasible or conflicting recommendations.

First experiment

Compare against a transparent baseline under both routine conditions and deliberately adverse scenarios.

This is an original educational brief. It is a starting point for discussion, not a claim that one technique fits every supply chain.