Conceptual board and connection ledger distinguish observed and inferred connectionsFrom a physical observation to a traceable connectionJ1.1R1U1.1R1.1R1.2Visible trace / uncertain connectionN01: J1.1 ↔ R1.1Evidence: measured + referencedN02: R1.2 ↔ U1.1Evidence: inferred; review requiredRecord each conclusion with its observation. Do not silently join inferred connections.³Ô¹Ïtv engineering illustration · conceptual; dimensions and acceptance are project-specific