Condition-Dependent Law and Cosmological Stability

Contemporary cosmology successfully explains the evolution of spacetime, matter, and energy through mathematically stable physical laws. However, the stability of those laws is itself often treated as philosophically primitive. Recent discussions concerning law emergence, cosmological fine-tuning, vacuum instability, and the limits of reductionism increasingly suggest that lawful regularity may itself require conceptual explanation. This paper proposes Conditional Cosmology as a philosophical framework for reconsidering the ontological status of physical law within cosmology. Rather than treating laws as absolutely fixed foundations, the framework interprets laws as relatively stable regularities maintained under broader conditions necessary for cosmological coherence. The paper further examines whether cosmological evolution may involve changes not only in matter and energy distribution, but also in the stability conditions underlying lawful structure itself. This possibility is discussed through the concept of Law-Phase Inversion, understood not as a conventional physical mechanism but as a conceptual transition between distinct regimes of cosmological stability. The aim of the present study is not to propose an empirically established cosmological theory. Rather, it is to contribute to ongoing philosophical discussions concerning law emergence, lawful stability, cosmological organization, and the conceptual foundations of cosmology.