Birth Rates Determine Life Expectancy in Theoretical Equilibrium Populations: Implications for political demography and conflict early warning

Andregg, Michael M.
2018-04
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Birth Rates Determine Life Expectancy in Theoretical Equilibrium Populations: Implications for political demography and conflict early warning

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2018-04

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American Intelligence Journal

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Executive Summary This paper examines implications for political demography of a theoretical population that is in complete equilibrium. By “complete equilibrium,” we mean that the population neither grows nor shrinks, there is neither immigration to nor emigration from it, and that the age structure has stabilized so that it no longer changes over time. These are all important elements of complete equilibrium, as opposed to stability in just absolute numbers. This condition is found in some natural populations of animals and plants, but it has not obtained in most human populations in recorded history. Reduced to basics, this theoretical population has the following characteristics: 1. In complete equilibrium populations, birth rates will equal death rates so the population neither grows nor shrinks. 2. In a complete equilibrium population, death rates determine life expectancy, expressible as: LE = 1000/DR. 3. Since, in a complete equilibrium population, birth rates equal death rates, this can also be expressed as: LE = 1000/BR. 4. This implies that fundamentally, birth rates determine life expectancy in complete equilibrium populations. This paper has two goals. The first is simply to check the accuracy of the theoretical formulas identified above. Since they are quite simple and likely accurate, I invite others to identify any errors. The second goal is at least as important. How do human populations evade this limiting outcome? Or do they really? I fear the short answer to these questions is a) genocide and war, and b) no, they do not really escape an iron law of biology. However, they often do displace the high death rates to marginal or weaker populations. If correct, this has significant implications for conflict early warning as illustrated by several real-world examples.

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This is a very clinical, population genetic discussion of the basic relationship between birth rates and life expectancy in equilibrium and near equilibrium populations. It quickly moves to connections between population pressure and conflicts of various kinds. This has implications for conflict early warning on earth, so that is examined by way of several cases.

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Andregg, Michael M.. (2018). Birth Rates Determine Life Expectancy in Theoretical Equilibrium Populations: Implications for political demography and conflict early warning. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/208814.

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