By Jim Manzi

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How do we know which social and economic policies work, which should be continued, and which should be changed? Jim Manzi argues that throughout history, various methods have been attempted — except for controlled experimentation. Experiments provide the feedback loop that allows us, in certain limited ways, to identify error in our beliefs as a first step to correcting them. Over the course of the first half of the twentieth century, scientists invented a methodology for executing controlled experiments to evaluate certain kinds of proposed social interventions. This technique goes by many names in different contexts (randomized control trials, randomized field experiments, clinical trials, etc.). Over the past ten to twenty years this has been increasingly deployed in a wide variety of contexts, but it remains the red-haired step child of modern social science. This is starting to change, and this change should be encouraged and accelerated, even though the staggering complexity of human society creates severe limits to what social science could be realistically expected to achieve. Randomized trials have shown, for example, that work requirements for welfare recipients have succeeded like nothing else in encouraging employment, that charter school vouchers have been successful in increasing educational attainment for underprivileged children, and that community policing has worked to reduce crime, but also that programs like Head Start and Job Corps, which might be politically attractive, fail to attain their intended objectives. Business leaders can also use experiments to test decisions in a controlled, low-risk environment before investing precious resources in large-scale changes — the philosophy behind Manzi’s own successful software company.

In a powerful and masterfully-argued book, Manzi shows us how the methods of science can be applied to social and economic policy in order to ensure progress and prosperity.

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On Sale: May 1, 2012
Page Count: 320 pages
Publisher: Basic Books
ISBN-13: 9780465029310

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Jim Manzi

About the Author

Jim Manzi is the founder and chairman of Applied Predictive Technologies (APT), an applied artificial intelligence software company. Prior to that he was a vice president at Mercer Management Consulting. He is currently a contributing editor at National Review, where he writes about science, technology, business and economics, a senior fellow at the Manhattan Institute, and serves on a number of other corporate and non-profit boards. He has also written articles for a variety of political publications including the New York Post, the Weekly Standard, the Atlantic, and Slate. His work is regularly covered widely in the blogosphere, and his articles on why Republicans should acknowledge global warming and “Keeping America’s Edge” have become much-debated must-reads. He lives in Paris.

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Jim Manzi

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