Thinking in Systems

Publishers Weekly, Starred Review- Just before her death, scientist, farmer and leading environmentalist Meadows (1941-2001) completed an updated, 30th anniversary edition of her influential 1972 environmental call to action, Limits to Growth, as well as a draft of this book, in which she explains the methodology-systems analysis-she used in her ground-breaking work, and how it can be implemented for large-scale and individual problem solving. With humorous and commonplace examples for difficult concepts such as a "reinforcing feedback loop," (the more one brother pushes, the more the other brother pushes back), negative feedback (as in thermostats), accounting for delayed response (like in maintaining store inventory), Meadows leads readers through the increasingly complex ways that feedback loops operate to create self-organizing systems, in nature ("from viruses to redwood trees") and human endeavor. Further, Meadows explicates methods for fixing systems that have gone haywire ("The world's leaders are correctly fixated on economic growth ...but they're pushing with all their might in the wrong direction"). An invaluable companion piece to Limits to Growth, this is also a useful standalone overview of systems-based problem solving, "a simple book about a complex world" graced by the wisdom of a profound thinker committed to "shaping a better future. "When I read Thinking in Systems I am reminded of the enormity of the gap between systemic thinkers and policy makers. If this book helps narrow the gap, it will be Dana's greatest contribution."--Lester Brown, founder and President, Earth Policy Institute "Dana Meadows' exposition in this book exhibits a degree of clarity and simplicity that can only be attained by one who profoundly and honestly understands the subject at hand--in this case systems modeling. Many thanks to Diana Wright for bringing this extra legacy from Dana to us."--Herman Daly, Professor, School of Public Policy, University of Maryland at College Park "Reading Thinking in Systems evokes the wisdom and even the voice of Dana Meadows. We are reminded of how she was not only one of the great systems thinkers, but also one of our greatest teachers. This is modestly called a primer, and indeed it is, but unlike most books with that title, this one quickly takes one from the elementary into deep systems thinking about issues as critical today as they were when Dana wrote these words. The discussion of oil use and the interaction of its extraction pattern with economic decision making should be required reading for all energy policy makers and energy company executives (as well as all informed citizens in a democracy). The fisheries case reminds us of how little any government or private actor has done to grasp the importance of takeout flows in determining stocks when the input flows are not within our control. The commentary on economics and, yes the need to consider limits, is a clear systems statement that clarifies a great deal of discussion that goes back to The Limits to Growth. It is remarkable that Dana is able to explain with such clarity such systems concepts of stocks, flows, feedback, time delays, resilience, bounded rationality, and system boundaries and to illustrate each one with multiple informative examples. Her statement that goals that optimize subsystems will sub optimize the functioning of the total system, is truly profound. As the book moves from the 'mechanics' of systems dynamics to Dana's more philosophical perspective, we are treated to her inherent belief in human values that consider the good of all, and how much more effective considering the needs of others is likely to be in solving larger, complex problems. The universe and our society may be very complex and operate in counterintuitive, non-liner fashion, but following the insights of this book and applying them will provide for far more effective solutions

A woman whose pioneering work in the 1970s still makes front-page news, Donella Meadows was a scientist, author, teacher, and farmer widely considered ahead of her time. She was one of the world's foremost systems analysts and lead author of the influential Limits to Growth--the 1972 book on global trends in population, economics, and the environment that was translated into 28 languages and became an international bestseller. That book launched a worldwide debate on the earth's capacity to withstand constant human development and expansion. Twenty years later, she and co-authors Dennis Meadows and Jorgen Randers reported on their follow-up study in Beyond the Limits and a final revision of their research, Limits to Growth: The 30-Year Update, was published in 2004.