To calculate the GDP, numerous data points have to be linked together and hundreds of wholly subjective choices made regarding what to count and what to ignore. In spite of this methodology, the GDP is never presented as anything less than hard science, whose fractional vacillations can make the difference between reelection and political annihilation. Yet this apparent precision is an illusion. The GDP is not a clearly defined object just waiting around to be “measured.” To measure GDP is to seek to measure an idea. A great idea, admittedly. There’s no denying that GDP came in very handy
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