20/07/2011

Some Proxies Are Useless

[T]he idea that there is one thing called "government"—and that you can measure it by looking at total spending—makes no sense.

First of all, the number of dollars collected and spent by the government doesn't tell you how big the government is in any meaningful sense. Most government policies can be accomplished at least three different ways: spending, tax credits, and regulation. For example, let's say we want to help low-income people afford rental housing. We can pay for housing vouchers; we can provide tax credits to developers to build affordable housing; or we can have a regulation saying that some percentage of new units must be affordably priced. The first increases the amount of cash flowing in and out of the government; the second decreases it; and the third leaves it the same. Yet all increase government's impact on society.

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