Editing Genuine progress indicator (section)

===Income vs. capital depletion===

[[John Hicks|Hicks]] (1946) pointed out that the practical purpose of calculating income is to indicate the maximum amount that people can produce and consume without undermining their capacity to produce and consume the same amount in the future. From a national income perspective, it is necessary to answer the following question: "Can a nation's entire GDP be consumed without undermining its ability to produce and consume the same GDP in the future?" This question is largely ignored in contemporary economics but fits under the idea of [[Sustainability#Economic sustainability|sustainability]].