Diagnosing Structural Endings: A Comparative-Historical Expansion of the Long-Term Management Index

This paper introduces a comparative-historical framework for diagnosing structural endings—points at which institutions lose their evolutionary viability despite continued resource input or reform efforts. Building on the Long-Term Management Index (LTMI) and the Evolutionary Adaptivity Score (EAS), the study analyzes how institutions fail not due to lack of intent or investment, but due to structural configurations that suppress memory retention, reattempt mechanisms, dissent integration, and option space expansion. Through cross-domain case studies—including military history (Germany, Japan, France, the UK, the US), semiconductor policy (Japan vs. Taiwan), and postwar Japanese science and education systems—the paper demonstrates how structural blindness and institutional rigidity manifest across domains. By integrating insights from military history, organizational theory, and institutional economics, the paper offers a unified diagnostic model for evaluating long-term institutional health, with implications for strategic planning, policy design, and legacy-oriented reform.