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Progress is via spikes (boom-and-bust) by default. Civilization is when things are arranged such that progress is via stair-steps.
keywords: Economics, prosperity, processes

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Support consists of standing in for missing infrastructure. (cf: Big John giving a mighty shove to the sagging timber at the bottom of the mine)
keywords: work, gap, routine, crisis

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If x is the amount of your income, r(x)/x is the fraction of it that can be spent in a scalar (non-directed, non-vectorial) manner without outside influence.
keywords: life, General Systems Theory, wealth, Economics, preference