Reversibility Is Not Free: Maintenance Costs, Path Diversity, and the Dual Nature of JAM

This paper investigates why systems across biological, social, and organizational domains tend to converge toward irreversible alignment, even when reversibility is known to be valuable. Rather than treating rigidity as a failure of intelligence, ethics, or design, the paper argues that irreversibility emerges from a structural cost asymmetry: maintaining multiple viable paths requires continuous investment in coordination, redundancy, tolerance, narrative plurality, and option-preserving infrastructure. When these maintenance costs exceed a system’s available reserve capacity, path diversity collapses and irreversible regimes such as Joint Alignment Memory (JAM) become economically favored. The study formalizes this dynamic through a maintenance budget constraint, an asymmetry ratio between reproduction and escape costs, and an hourglass-based geometry of path compression. It shows that reproduction within a condensed structure becomes progressively cheaper, while escape becomes prohibitively expensive as accumulated constraints, temporal inertia, and the erosion of return paths increase. Importantly, JAM is not framed as a pathological state. In stable environments, it provides adaptive advantages such as predictability, low coordination cost, coherent identity, and cheap structural reproduction. Risk arises only when environmental change demands reversibility that the system can no longer afford. The paper also outlines design implications for preserving reversibility, including subsidized diversity, controlled micro-fluctuations, and asymmetric interventions targeting weakly aligned layers. Finally, a speculative epilogue explores whether similar maintenance dynamics may operate at cosmological scales, framed explicitly as metaphor rather than physical theory. This work complements earlier papers in the IPCSALT–UPF research program (Papers 42–44) by providing the missing causal explanation for why irreversible condensation persists: not because alternatives are impossible, but because they are too expensive to maintain.