Here are two things we know about how debt affects the economy.

First, in the abstract it doesn’t matter. For every debtor there is a creditor, and in theory an economy should be able to hum along just fine whether a country’s citizens have a great deal of debt or none. A company’s ability to produce things depends on the workers and machines it employs, not the composition of its balance sheet, and the same can be said of nations.

Second, in practice this is completely wrong, and debt plays an outsize role in creating boom-bust cycles across the world and through history. High debt increases the amplitude of economic swings. To think of it in terms of the corporate metaphor, high reliance on borrowed money may not affect a company’s level of output in theory, but makes it a great deal more vulnerable to bankruptcy.

via Global Debt Has Risen by $57 Trillion Since the Financial Crisis, Which Is Scary – NYTimes.com.

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