Humanity-Scale Collapse Architecture (Eight Systems, Three Categories)

This paper defines the collapse architecture governing humanity‑scale systems. It identifies eight interacting systems organized into three structural categories and shows how their coupling produces the long‑term trajectory of civilizational stability, overshoot, and decline. The framework separates physical forcing from system response and clarifies why collapse emerges from tempo mismatch rather than single‑cause explanations. The analysis integrates climate dynamics, ecological depletion, economic throughput, energy constraints, and institutional response limits into a unified structural model. Each system is described in terms of its governing variables, thresholds, and failure modes. The paper distinguishes planetary persistence from civilizational resilience and shows why collapse is a systems‑level behavior rather than a discrete event. The goal of the framework is to provide a clear, non‑ideological architecture for understanding how large‑scale human systems drift, accelerate, and fail. It is intended as a foundation for future work on mitigation, adaptation, and long‑horizon planning.