The Power of the Machine: Global Inequalities of Economy, Technology, and Environment ALF HORNBORG ALTAMIRA PRESS, WALNUT CREEK, CALIFORNIA, 2001 264 PP. $75.00 HARDCOVER, $29.95 PAPERBACK Hornborg's book-a seamlessly organized collection of his previously published articles-asks this question: What is the source of the world's current ecological crises? His answer is the familiar bogeyman of capitalism and its henchman money. But his explanation of that answer is quite innovative, and has the potential to help build a framework that would be a theoretical breakthrough for understanding human-environment relations. In addition to standard positivist arguments, he also incorporates many concepts and analytical techniques from poststructural theory. He applies these perspectives to the broad scope of global economics and the ubiquity of environmental degradation-and specifically individuals involved in everyday relationships of production, distribution and consumption. Because of its subject matter and innovative approaches, this book should be read by all economic and ecological anthropologists and would provide good material for teachers of upper division classes in those fields, although the book addresses questions that are pressing in virtually all of the social sciences. In response to a growing literature that wants to push the origins of the process of wealth accumulation back at least 5000 years (see Gills and Frank 1990), the book argues for discontinuities in the modes of wealth accumulation, which are plunder, merchant capitalism, financial capitalism, undercompensation of labor, and underpayment for natural resources (unsustainable extraction). Industrial capitalism is a particular arrangement of these modes that threatens sustainability in a way that others have not. By Hornborg's definition, all modes of accumulation structure the appropriative processes (via tools), transformative processes (of raw materials) and convertible processes (creation of valuables and consumables). The implication of this theory is that all modes of accumulation have, at base, one thing in common: some minimum net transfer of wealth from one sector of society to another is assured by people's evaluations that support a certain rate of exchange. The latter part sounds almost circular and seems to resemble the rationale of neoclassical economics, i.e., people believe that the trading they are doing is fair (otherwise they wouldn't do it). Combined along with the net transfer of wealth, the ramification is that accumulation, i.e., the existence of haves and have-lesses, is fundamental to complex society, that both the haves and the havelesses develop beliefs that help maintain the system, and that these beliefs often include hopefulness about the Power of the Machine to solve problems. Drawing from the second Law of Thermodynamics, Hornborg also tries to join political economy and bioecology first by labeling Marx's and H.T. Odum's analyses of alternative currencies (labor and emergy, respectively) as normative theories, second by finding that the energy that remains in a finished product is inversely proportional to the increase in its value. Thus, urban centers of accumulation contain less potential energy, but higher value, and are the result of accumulative processes that exploit human labor and unsustainably mine the biophysical environment. This argument parallels Harvey's (1985) idea of the 'spatial fix', in which capital will always seek places where the global terms of trade can find a cheaper cost of production. Hornborg would emphasize that it does not take less energy to mine the ground in one place than another, and it does not take less muscle or finesse to build a tool in one place than another. If labor and capital costs were equalized across the planet, economic growth would be limited even more than it is now. Thus, it might follow that industrial capitalism always depends upon, and co-exists with, the other modes of accumulation to maintain unequal global terms of trade. …