Frank Shostak explores the fraud that is the Gross Domestic Product statistic, and its wider implications. From Shostak at mises.org:
To gain insight into the state of an economy, most financial experts and commentators rely on a statistic called the Gross Domestic Product (GDP). The GDP framework looks at the value of final goods and services produced during a particular time interval, usually a quarter or a year.
This statistic is constructed in accordance with the view that what drives an economy is not the production of wealth but rather its consumption. What matters here is the demand for final goods and services. Since consumer outlays are the largest part of the overall demand, it is commonly held that consumer demand is the key driver of economic growth.
All that matters in this view is the demand for goods, which in turn will give rise almost immediately to their supply. Because the supply of goods is taken for granted, this framework ignores the whole issue of the various stages of production that precede the emergence of the final good.
However, in order to manufacture a car, there is a need for coal to be employed in the production of steel, which in turn will be employed to manufacture an array of tools. These in turn are used to produce other tools and machinery and so on, until we reach the final stage of the production of a car. The harmonious interaction of the various stages of production results in the final product.
Within the GDP framework, the aspect of funding economic activity never emerges. In this framework goods emerge because of people’s desires. In the real world, it is not enough to have demand for goods – one must have the means to accommodate people’s desires. The means are various final goods that are required to sustain various individuals in the various stages of production.