**2. Evidential Coherence:** This dimension measures the ontology's capacity to unify and elegantly explain the existing body of empirical evidence across a wide spectrum of disparate domains (e.g., fundamental physics, cosmology, biology, cognitive science). This is a test of retrodiction and integration—weaving a single, coherent narrative that accommodates what we already know. High Evidential Coherence is a crucial component of robust **Comprehensive Coherence**.