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This book is a brilliant analysis of spontaneous orders from a complexity perspective stimulated by the work of Hayek, Polanyi, and others. It is the result of decades of deep thinking on the subject. Any future analysis of this subject should start from this book.

– Mario J. Rizzo, Professor of Economics, New York University

Butos and McQuade show that social processes such as science and market exchange are not just one damn thing after another. These social orders are "Hayekian systems" with a common abstract structure that produces more useful knowledge and a more intricate order than "rational" human design can achieve. Their book is an important and outstanding achievement.

– Roger Koppl, Professor of Finance, Syracuse University

Hayekian Systems is a landmark not only for the field of Austrian economics but, more broadly, for the theoretical understanding of how complex social systems (from markets to governments to science) function, learn, change, anticipate, and interact. It is a fascinating work, of remarkable precision, complexity, and reach, and yet is very accessible and clear. It will allow researchers and thinkers from a multitude of backgrounds to grasp Hayek’s extraordinary relevance for conceptualizing current social arrangements and understanding their malfunctioning.

– Elisabeth Krecké, Macroeconomic Policy Expert, Geopolitical Intelligence Services, Liechtenstein

This book has something new to offer. Drawing upon their deep knowledge of Hayek's work and Austrian economics, Bill Butos and Tom McQuade craft a general theory of adaptive systems that enhances our understanding of social institutions well beyond the marketplace. Of particular note is their penetrating examination of modern science as a complex social order and their novel account of the distortionary and destabilizing impacts of government intervention on scientific activity. The book will appeal to a broad audience: economists of various stripes (whether Austrian, institutional or evolutionary), political scientists, sociologists of science, and educated lay people with an interest in social and economic issues.

– David Harper, Clinical Professor of Economics, New York University

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