Critical Mass

Winner of the Aventis Prize

Critical Mass asks the question, Why is society the way it is? How does it emerge from a morass of individual interactions? Are there laws of nature that guide human affairs? Is anything inevitable about the ways humans behave and organize themselves, or do we have complete freedom in creating our societies? In short, just how, in human affairs, does one thing lead to another?

In searching for answers, science writer Philip Ball argues that we can enlist help from a seemingly unlikely source: physics. The first person to think this way was the seventeenth-century English philosopher Thomas Hobbes. His approach, described in Leviathan, was based not on utopian wishful thinking, but rather on Galileo's mechanics; it was an attempt to construct a moral and political theory from scientific first principles. Although his solution—absolute monarchy—is unappealing today, Hobbes sparked a new way of thinking about human behavior in looking for the "scientific" rules of society. Adam Smith, Immanuel Kant, Auguste Comte, and John Stuart Mill pursued this same idea from different political perspectives.

Today the purpose of applying concepts from physics to the social, political, and economic sciences is no longer to prescribe how society ought to be; instead, it is to understand the way it is, and how it evolves. In Critical Mass, Ball looks at what this "physics of society" has to say about how people move in open or enclosed spaces; how they make decisions and cast votes, form allegiances, join groups, establish companies and communities. He examines the behavior of financial markets and reveals the hidden structure in networks of social and business contacts, and he explores the politics of conflict and cooperation from a scientific point of view. If physics can help us explain and understand human interaction and social behavior, can it also be used to anticipate and thereby avoid problems? Can physics be harnessed to improve societies, to guide us toward better decisions, and to make a safer and fairer world? Or is that merely another dream destined for the graveyard of utopias past?