complexity and collapse

Foreign Affairs | More recently, it is Jared Diamond, an anthropologist, who has captured the public imagination with a grand theory of rise and fall. His 2005 book, Collapse: How Societies Choose to Fail or Succeed, is cyclical history for the so-called Green Age: tales of past societies, from seventeenth-century Easter Island to twenty-first-century China, that risked, or now risk, destroying themselves by abusing their natural environments. Diamond quotes John Lloyd Stevens, the American explorer and amateur archaeologist who discovered the eerily dead Mayan cities of Mexico: "Here were the remains of a cultivated, polished, and peculiar people, who had passed through all the stages incident to the rise and fall of nations, reached their golden age, and perished." According to Diamond, the Maya fell into a classic Malthusian trap as their population grew larger than their fragile and inefficient agricultural system could support. More people meant more cultivation, but more cultivation meant deforestation, erosion, drought, and soil exhaustion. The result was civil war over dwindling resources and, finally, collapse.

Diamond's warning is that today's world could go the way of the Maya. This is an important message, no doubt. But in reviving the cyclical theory of history, Collapse reproduces an old conceptual defect. Diamond makes the mistake of focusing on what historians of the French Annales school called la longue durée, the long term. No matter whether civilizations commit suicide culturally, economically, or ecologically, the downfall is very protracted. Just as it takes centuries for imperial overstretch to undermine a great power, so, too, does it take centuries to wreck an ecosystem. As Diamond points out, political leaders in almost any society -- primitive or sophisticated -- have little incentive to address problems that are unlikely to manifest themselves for a hundred years or more.

Did the proconsuls in Cole's The Consummation of Empire really care if the fate of their great-great-grandchildren was destruction? No. Would they have accepted a tax increase that would have financed a preemptive strike against the next millennium's barbarian horde? Again, no. As the UN Climate Change Conference in Copenhagen last December made clear, rhetorical pleas to save the planet for future generations are insufficient to overcome the conflicts over economic distribution between rich and poor countries that exist in the here and now.

The current economic challenges facing the United States are also often represented as long-term threats. It is the slow march of demographics -- which is driving up the ratio of retirees to workers -- and not current policy, that condemns the public finances of the United States to sink deeper into the red. According to the Congressional Budget Office's "alternative fiscal scenario," which takes into account likely changes in government policy, public debt could rise from 44 percent before the financial crisis to a staggering 716 percent by 2080. In its "extended-baseline scenario," which assumes current policies will remain the same, the figure is closer to 280 percent. It hardly seems to matter which number is correct. Is there a single member of Congress who is willing to cut entitlements or increase taxes in order to avert a crisis that will culminate only when today's babies are retirees?

Similarly, when it comes to the global economy, the wheel of history seems to revolve slowly, like an old water mill in high summer. Some projections suggest that China's GDP will overtake the United States' GDP in 2027; others say that this will not happen until 2040. By 2050, India's economy will supposedly catch up with that of the United States, too. But to many, these great changes in the balance of economic power seem very remote compared with the timeframe for the deployment of U.S. soldiers to Afghanistan and then their withdrawal, for which the unit of account is months, not years, much less decades.

Yet it is possible that this whole conceptual framework is, in fact, flawed. Perhaps Cole's artistic representation of imperial birth, growth, and eventual death is a misrepresentation of the historical process. What if history is not cyclical and slow moving but arrhythmic -- at times almost stationary, but also capable of accelerating suddenly, like a sports car? What if collapse does not arrive over a number of centuries but comes suddenly, like a thief in the night?