Le-Method — The Veto Hierarchy of Scientific Validation

This methodological essay establishes the Veto Hierarchy of Scientific Validation — a formal ordering of the three instruments of scientific knowledge based on their authority to invalidate each other. Logic operates as a Preventive Veto, eliminating causal contradictions before any calculation is performed. Mathematics operates as an Efficiency Veto, modeling and refining theories that logic has cleared. Physical Testing operates as the Supreme Veto, delivering the final and irrecusable judgment on what exists in the observable world. When physical reality contradicts logic or mathematics, physical reality prevails — without exception. The essay documents how modern theoretical physics inverted this order, elevating mathematical elegance to the status of physical evidence in the absence of empirical confirmation. It proposes the Principle of Scalar Invariance as the methodological bridge for domains where direct physical testing is inaccessible: a law confirmed by Supreme Veto testing across biological and mechanical scales is required by logical symmetry to hold across all orders of magnitude. The Veto Hierarchy is applied systematically throughout the Law of Existence series as the Three-Veto Screen, first deployed in full operational form in LE-MS15.