Structural Persistence of Global Human Adaptation Under Sustained Informational Forcing (1950–2025)

Human adaptation in the modern era is often portrayed as increasingly unstable, fragmented, and unpredictable due to accelerating technological change and pervasive information exposure. This study challenges that assumption by examining global human adaptation as a coupled, non-equilibrium system operating under sustained informational, social, and environmental forcing from 1950 to 2025. Using a structure-aware diagnostic framework, we analyze whether large-scale behavioral and social organization degrades into stochastic variability or converges toward persistent structural regimes. Across extensive control ensembles and perturbation tests, the system consistently converges to a stable, low-dimensional adaptive regime characterized by invariant topology, high causal density, moderate complexity, and significant self-similarity. Despite substantial local variability, historical shocks, and increasing information density, the global adaptive structure remains unchanged. These findings indicate that modern human adaptation operates within a persistent structural regime rather than as an unconstrained stochastic process. The results have implications for understanding cultural evolution, information ecology, collective behavior, and long-term societal resilience in information-dense environments, offering a new framework for interpreting global adaptation beyond event-level volatility.