• GDP is calculated by subtracting imports from GNP, which in essence is gross end user sales of goods and services. The article [4] mentions $100 and$50 carburetors (sic). But the real problem is more like $100 and$5. When the carburetors are bought from overseas, they still sell for pretty much the same price so GNP is unaffected. The cost of the imports is so low that GDP hardly declines as a result of the subtraction. But the carburetor makers are laid off, so the work force shrinks. Since measured output (GDP) is essentially unchanged, productivity rises. ... But the fall in domestic value-added associated with the job losses is simply not being measured. So GDP is heavily overstated.[5]