This paper is the thirtieth in a sequence developing an interpretive framework that redescribes physical reality as a causally consistent history of information updates rather than as a collection of independently existing objects. It is the second panel of the eighth grouping — a foundational-physics trilogy — and its quantum-structural centre. Paper 29 defined a quantum record's world-side physical-publicity capacity "at any declared admissible grain gamma," deferring the question of which grains are admissible; this paper pays that debt. Its subject is classicality: which observables support stable pointer structures and redundantly recorded outcome information, shareable as "the classical facts." The claim is that classicality is real but not authoritatively global. There is no Global Classicalizer: no physically privileged subsystem or process that primitively fixes the one system/environment tensor cut, the one set of pointer variables, the one authentic decoherent-history family, and the one true coarse-graining. Einselection selects pointer states, but only relative to a declared cut and interaction; the cut is not fixed by the bare global state, because tensor-product structure is observable-induced and admits inequivalent virtual subsystems. Decoherent and consistent histories select no unique family either. What disciplines this is not a global classicalizer but the series' admissibility machinery, here made operational. A classicality verdict is relative to a declared, anti-gerrymandered, challenge-open cut gamma and history-family kappa, is objectively assessable relative to that specification, and is profile-valued (ClassProf). The flagship R-A separates an unconditional kinematic part — a bare state fixes neither subsystem purity and entanglement nor which observables count as local; relative to a declared tensor-product structure it fixes a sharpness profile over the local-observable algebras, which a worked two-qubit Bell-state example computes (the same state is maximally entangled under one factorization and a product under a rotated one), although the Born sharpness of one fixed physical observable is not changed by a mere refactorization — from a conditional dynamical part: if one fixed dynamics admits more than one admissible factorization with distinct robust pointer structures, the classicality profiles need not be unique, an antecedent whose multiple-factorization and pointer-robustness components recent fixed-Hamiltonian searches support (Adil et al. 2026), without yet establishing its redundancy or history-family components. There is no primitive, state-only canonical cut, though a particular dynamics may contingently leave a unique admissible one. R-B lifts the set-selection problem: consistency does not single out a family, contrary inferences are possible, and whether quasiclassicality leaves a unique realm is unsettled; conditional on more than one admissible quasiclassical family, time-extended assertibility is family-relative, with a disposition trichotomy (determinate / admissibly open / spuriously unique). A coherence policy, not a theorem, governs cross-grain comparison: admissible grains agree on the full statistics of genuinely shared observables, while their publicity capacity profiles agree only given a common access and fragmentation specification; elsewhere they are declared incomparable, and the failure to glue globally is itself the signature of no global classicalizer, whose formalization is handed to Paper 31. This discharges Paper 29's grain-deferral and keeps classicality (world-side) type-distinct from warranted public standing (the warrant layer): classicality is grain-relative but objective — there is no primitive state-only canonical cut, and there is no anarchy either. ALAC Paper 30. Second panel of the eighth grouping — a foundational-physics trilogy (29 Public Quantum Records -> 30 Classicality Without a Global Classicalizer -> 31 Spacetime Localization Without a Global Frame). Part of the Consistency-Constrained Information History (Akashic Ledger Architecture Cosmology) series. Presents no new quantum mechanics; results are interpretive (L2) on imported physics (L1).
Tomoyuki Uchida (Tue,) studied this question.