Semantic Physics: A Transport Theory of Held Meaning (An Entry Paper)

Semantic Physics (SP) is a local transport theory of held meaning. Within a defined closure class T1–T5 of local post-onset transport, admissible meaning-bearing transport is canonically decomposed into a four-sector grammar Q = (D, h, B, σ) — drive, holding capacity, internal blockade, and boundary permeability — and this decomposition is minimal, complete, unique up to admissible reparameterization, and intervention-separable. The grammar predicts separable failure and intervention modes across domains. Three empirical anchors support the framework, each carrying its current status: hold-capacity in banking crises across thirty-eight institutions and three crises (validated empirical anchor, AUC = 0.983); discourse bi-modality across thirty-three thousand seven hundred and seventy turns (empirical regularity with explicit methodological caveat; ΔBIC = 44–69, p < 10−50) with cross-rater Octava stability ICC(2,k) = 0.962; and a clean falsification of a Golden-Ratio competitor hypothesis (negative result, 0/15, p = 0.0015). Pharmacological separability of four collapse modes at the chemical synapse (mapping anchor on biological substrate) anchors the intervention-separability claim. The paper states what SP claims, what it does not claim, and the conditions under which specific layers retreat. SP is not a universal theory of meaning; it is a conditional local grammar with a defined closure class, registered falsifiers, and a published status discipline that distinguishes theorem, bridge, witness, and frontier