Paradox of thrift
The paradox of thrift (or paradox of saving) is a paradox of economics. The paradox states that an increase in autonomous saving leads to a decrease in aggregate demand and thus a decrease in gross output which will in turn lower total saving. The paradox is, narrowly speaking, that total saving may fall because of individuals' attempts to increase their saving, and, broadly speaking, that increase in saving may be harmful to an economy.[1] The paradox of thrift is an example of the fallacy of composition, the idea that what is true of the parts must always be true of the whole. The narrow claim transparently contradicts the fallacy, and the broad one does so by implication, because while individual thrift is generally averred to be good for the individual, the paradox of thrift holds that collective thrift may be bad for the economy.
It had been stated as early as 1714 in The Fable of the Bees,[2] and similar sentiments date to antiquity.[3][4] It was popularized by John Maynard Keynes and is a central component of Keynesian economics.
The paradox[edit]
The argument begins from the observation that in equilibrium, total income must equal total output. Assuming that income has a direct effect on saving, an increase in the autonomous component of saving, other things being equal, will move the equilibrium point, at which income equals output to a lower value, thereby inducing a decline in saving that may more than offset the original increase.
In this form it represents a prisoner's dilemma as saving is beneficial to each individual but disadvantageous to the general population. This is a "paradox" because it runs contrary to intuition. Someone unaware of the paradox of thrift would fall into a fallacy of composition and assume that what seems to be good for an individual within the economy will be good for the entire population. However, exercising thrift may be good for an individual by enabling that individual to save for a "rainy day", and yet not be good for the economy as a whole.
This paradox can be explained by analyzing the place, and impact, of increased savings in an economy. If a population decides to save more money at all income levels, then total revenues for companies will decline. This decreased demand causes a contraction of output, giving employers and employees lower income. Eventually the population's total saving will have remained the same or even declined because of lower incomes and a weaker economy. This paradox is based on the proposition, put forth in Keynesian economics, that many economic downturns are demand-based.
Related concepts[edit]
The paradox of thrift has been related to the debt deflation theory of economic crises, being called "the paradox of debt"[11] – people save not to increase savings, but rather to pay down debt. As well, a paradox of toil and a paradox of flexibility have been proposed: A willingness to work more in a liquidity trap and wage flexibility after a debt deflation shock may lead not only to lower wages, but lower employment.[12]
During April 2009, U.S. Federal Reserve Vice Chair Janet Yellen discussed the "Paradox of deleveraging" described by economist Hyman Minsky: "Once this massive credit crunch hit, it didn’t take long before we were in a recession. The recession, in turn, deepened the credit crunch as demand and employment fell, and credit losses of financial institutions surged. Indeed, we have been in the grips of precisely this adverse feedback loop for more than a year. A process of balance sheet deleveraging has spread to nearly every corner of the economy. Consumers are pulling back on purchases, especially on durable goods, to build their savings. Businesses are cancelling planned investments and laying off workers to preserve cash. And, financial institutions are shrinking assets to bolster capital and improve their chances of weathering the current storm. Once again, Minsky understood this dynamic. He spoke of the paradox of deleveraging, in which precautions that may be smart for individuals and firms—and indeed essential to return the economy to a normal state—nevertheless magnify the distress of the economy as a whole."[13]
Sectoral Balances analysis shows the effect of net savings by the private sector. It must either be funded by a public sector deficit or a by a foreign sector deficit which is equivalent to exports being higher than imports for the country analyzed. Therefore, there exists two types of possible equilibriums for a growing economy. Either the public sector is funding the growth of the private sector via a slight deficit or its current account balance is positive and the country is a net exporter of goods and services.