一个作业题，请大家帮忙解释：为什么社会虽然强烈认同自由市场，但政府干预自由市场仍是必须的。 谢谢大家（原文是Explain the reasons why, even in societies that believe strongly in free markets, government intervention in the market is regarded as a necessity.）
xplain the reasons why, even in societies that believe strongly in free markets, government intervention in the market is regarded as a necessity.??
Because government is greedy. They look for as many as ways to extend their functions. At the beginning, their job is just security. And they start to build "public goods" in order to kick out of the private companies to monopolize the market for money. And they even abandon the gold standard to print money as they want.
Conventional economics teaches that if the benefits or costs of one person's economic decisions spill over onto others, an externality exists, and it ought to be corrected by the government through redistribution. But, broadly defined, externalities are inherent in every economic transaction because costs and benefits are ultimately subjective. I may be delighted to see factories belching smoke because I love industry. But that does not mean I should be taxed for the privilege of viewing them. Similarly, I may be offended that most men don't have beards, but that doesn't mean that the clean-shaven ought to be taxed to compensate me for my displeasure.
The Austrian School redefines externalities as occurring only with physical invasions of property, as when my neighbor dumps his trash in my yard. Then the issue becomes crime. There can be no value-free adding-up of utilities to determine subjective costs or benefits of economic activity. Instead, the relevant criterion should be whether economic actions occur in a peaceful manner.
Another area where Austrians differ is how the government is supposed to go about the practical problem of correcting for market failures. Grant that somehow the government can spot a market failure, the burden of proof is still on the government to demonstrate that it can perform the task more efficiently than the market. Austrians would refocus the energy that goes into finding market failures to understanding more about government failures.
But the failure of government to do what mainstream theory says it can is not a popular subject. Outside of the Public Choice schools, it is usually assumed that the government is capable of doing anything it wants to do, and of doing it well. Forgotten is the nature of the state as an institution with its own pernicious designs on society. One of the contributions of Rothbard was to focus Austrians on this point, and on the likely patterns interventions will take. He developed a typology of interventionism, and provided detailed critiques of many kinds of interventions and their consequences.
jg-xs1
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