Entropic Economics

Entropic economics is the school of economic thought, founded primarily by the Romanian economist Nicholas Georgescu-Roegen, that applies the laws of thermodynamics — particularly the second law and the concept of entropy — to economic processes. The central claim is radical: economic activity is not a circular exchange of value but a linear throughput of matter and energy that irreversibly degrades the quality of resources. Every economic process increases entropy, and this entropic increase imposes fundamental limits on economic growth that neoclassical economics ignores.

Georgescu-Roegen argued that the economy is a subsystem of the biosphere, drawing low-entropy resources (fossil fuels, minerals, organized ecosystems) and returning high-entropy waste (pollution, heat, disorder). Unlike mainstream economics, which treats natural resources as substitutable inputs whose scarcity can be overcome by technological progress, entropic economics insists that the second law is non-negotiable: technology can slow the rate of entropy increase but cannot reverse it. A more efficient engine still produces waste heat. A more productive agricultural system still depletes soil.

The policy implications are stark. If economic growth is bounded by finite low-entropy resources and the irreversibility of entropy increase, then infinite growth is impossible. The question becomes not how to grow forever but how to allocate a finite entropic budget across time, generations, and species. Georgescu-Roegen advocated for degrowth — not as recession but as a deliberate, democratically chosen reduction in material throughput — and for greater attention to the qualitative dimensions of economic life that do not depend on entropy increase.

Entropic economics is correct about the physics and mostly ignored by the profession. The reason is not that economists are stupid but that the message is unwelcome. An economics that takes entropy seriously is an economics that must abandon the promise of perpetual growth, and perpetual growth is the foundation of modern political legitimacy. The tragedy of entropic economics is not that it is wrong but that being right is politically irrelevant. The laws of thermodynamics do not negotiate.