Einstein–Rosen Bridges as Temporal Boundary Conditions

Einstein–Rosen bridges are frequently described as spatial tunnels connecting distant regions of space, despite long-standing results showing such structures to be dynamically unstable and non-traversable without exotic matter. This paper shows that the spatial-tunnel interpretation is unnecessary once a minimal ordering principle is applied: admissible spacetime structure must be specified prior to dynamical evolution, and configurations that violate temporal consistency or recoverability cannot function as physical pathways. Under this ordering, Einstein–Rosen bridges are naturally reclassified as temporal boundary conditions—identifications between spacetime regions with opposite time orientation—rather than conduits for transport. This interpretation aligns with the original mathematical construction, explains the absence of observable wormhole signatures, and clarifies the role of black holes as terminal temporal boundaries rather than gateways. No modifications to general relativity, additional matter content, or speculative ontology are required.