Contributions of Neoclassical Theory, Its Limitations, and the Future of Economic Theory

This paper offers a systematic reinterpretation of neoclassical economic theory, identifying both its foundational contributions and its structural limitations. It argues that the internal development of the neoclassical paradigm leads to the emergence of multiple equilibria, undermining the possibility of guaranteeing uniqueness and social optimality, and thereby revealing the central role of institutions in determining economic outcomes. The paper advances an alternative interpretation of major economic crises, rejecting behavioral explanations based on irrationality and instead proposing that crises arise from rational expectations of institutional incapacity in highly interdependent global systems. It further introduces a critical distinction between investment directed toward frontier technology and that directed toward obsolete technology, providing a unified explanation of divergent development trajectories, including the failure of the Soviet model and the success of Asian economies. Building on these insights, the article proposes an expansion of economic theory toward an Economy of Belonging, in which the central evaluative criterion is the effective capacity of individuals and nations to integrate productively into the global economic system. This framework integrates growth, development, crises, institutional analysis, and global interdependence into a unified theoretical architecture.