Some central questions in the natural and social sciences can't be answered by controlled laboratory experiments, often considered to be the hallmark of the scientific method. This impossibility holds for any science concerned with the past. In addition, many manipulative experiments, while possible, would be considered immoral or illegal. One has to devise other methods of observing, describing, and explaining the world.

In the historical disciplines, a fruitful approach has been to use natural experiments or the comparative method. This book consists of eight comparative studies drawn from history, archeology, economics, economic history, geography, and political science. The studies cover a spectrum of approaches, ranging from a non-quantitative narrative style in the early chapters to quantitative statistical analyses in the later chapters. The studies range from a simple two-way comparison of Haiti and the Dominican Republic, which share the island of Hispaniola, to comparisons of 81 Pacific islands and 233 areas of India. The societies discussed are contemporary ones, literate societies of recent centuries, and non-literate past societies. Geographically, they include the United States, Mexico, Brazil, western Europe, tropical Africa, India, Siberia, Australia, New Zealand, and other Pacific islands.

In an Afterword, the editors discuss how to cope with methodological problems common to these and other natural experiments of history.

The theory of natural law grounds human laws in the universal truths of God’s creation. Until very recently, lawyers in the Western tradition studied natural law as part of their training, and the task of the judicial system was to put its tenets into concrete form, building an edifice of positive law on natural law’s foundations. Although much has been written about natural law in theory, surprisingly little has been said about how it has shaped legal practice. Natural Law in Court asks how lawyers and judges made and interpreted natural law arguments in England, Europe, and the United States, from the beginning of the sixteenth century to the American Civil War.

R. H. Helmholz sees a remarkable consistency in how English, Continental, and early American jurisprudence understood and applied natural law in cases ranging from family law and inheritance to criminal and commercial law. Despite differences in their judicial systems, natural law was treated across the board as the source of positive law, not its rival. The idea that no person should be condemned without a day in court, or that penalties should be proportional to the crime committed, or that self-preservation confers the right to protect oneself against attacks are valuable legal rules that originate in natural law. From a historical perspective, Helmholz concludes, natural law has advanced the cause of justice.

China’s labor landscape is changing, and it is transforming the global economy in ways that we cannot afford to ignore. Once-silent workers have found their voice, organizing momentous protests, such as the 2010 Honda strikes, and demanding a better deal. China’s leaders have responded not only with repression but with reforms. Are China’s workers on the verge of a breakthrough in industrial relations and labor law reminiscent of the American New Deal?

In A New Deal for China’s Workers? Cynthia Estlund views this changing landscape through the comparative lens of America’s twentieth-century experience with industrial unrest. China’s leaders hope to replicate the widely shared prosperity, political legitimacy, and stability that flowed from America’s New Deal, but they are irrevocably opposed to the independent trade unions and mass mobilization that were central to bringing it about. Estlund argues that the specter of an independent labor movement, seen as an existential threat to China’s one-party regime, is both driving and constraining every facet of its response to restless workers.

China’s leaders draw on an increasingly sophisticated toolkit in their effort to contain worker activism. The result is a surprising mix of repression and concession, confrontation and cooptation, flaws and functionality, rigidity and pragmatism. If China’s laborers achieve a New Deal, it will be a New Deal with Chinese characteristics, very unlike what workers in the West achieved in the last century. Estlund’s sharp observations and crisp comparative analysis make China’s labor unrest and reform legible to Western readers.

Cost-benefit analysis (CBA) has been an important policy tool of government since the 1980s, when the Reagan administration ordered that all major new regulations be subjected to a rigorous test of whether their projected benefits would outweigh their costs. Not surprisingly, CBA has been criticized by many who claim that it neglects, especially on the benefit side, important values that are hard to measure.

In this book, the authors reconceptualize cost-benefit analysis, arguing that its objective should be overall well-being rather than economic efficiency. They show why the link between preferences and well-being is more complicated than economists have thought. Satisfying a person's preference for some outcome is welfare-enhancing only if he or she is self-interested and well-informed. Also, cost-benefit analysis is not a super-procedure but simply a way to identify welfare-maximizing policies. A separate kind of analysis is required to weigh rights and equal treatment.

This book not only places cost-benefit analysis on a firmer theoretical foundation, but also has many practical implications for how government agencies should undertake cost-benefit studies.