The indicators of the production of GDP are re-valued at constant prices with the double deflation method where the value added at constant prices is the difference between the value of output and the value of intermediate consumption at constant prices.

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This strategy requires very visible signage, some nifty software that distinguishes the method of payment, and ultra-clear communication with customers about the reason for the difference so they don't feel they're being whacked unfairly.

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But what makes Sorger's method stand out is the difference in how it approaches the problem of scaling to the human body: the Swift scales, where other bicycles may simply get taller without increasing the wheel base.

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