Boundary Compression and Apparent Possibility: An Admissibility Interpretation of Black Hole Cosmology

Recent claims suggest that the observable universe may exist within the interior of a black hole, with the event horizon acting as a cosmological boundary. These proposals are often framed as extensions of physical explanation into higher-dimensional or inaccessible regions. This paper applies the Paton Admissibility Framework to evaluate such claims. It is shown that extreme gravitational environments reduce observational legibility, increasing interpretive freedom without requiring new ontology. The apparent expansion of possibility near or beyond boundary conditions is a consequence of reduced constraint visibility rather than the introduction of new physical structure. The result is a structural clarification: boundaries compress observable constraint and produce the appearance of unconstrained possibility. Version 1.2 introduces an explicit measurement constraint, reinforcing that inaccessibility reflects observational limitation rather than ontological expansion.