What is the right crowd?

Moderate population refers to the population most suitable for the development of a country or region, which is a concept of population theory.

Theoretical research:

Early scholars of moderate population theory, represented by Cannan, thought that too much or too little population was not conducive to the development of a country or region, and there must be an optimal population between them. At any time, assuming that resources, capital, technology and other conditions remain unchanged, the moderate population of a country is the population with the largest per capita output or income, and the point where the per capita output or income of this population is the largest is called the "maximum income point". Population growth is under-population before reaching the "maximum profit point" and over-population after exceeding the "maximum profit point" (see figure).

Suowei put forward the idea of indicators to measure the moderate population, such as personal welfare, increasing wealth, employment, strength, health and longevity, cultural knowledge, total welfare, total life expectancy, number of residents and so on. , but focus on economically moderate population and moderately strong population. Economically moderate population refers to the population corresponding to the highest per capita output (living standard) (that is, when the total wealth increases the most and the marginal productivity is the highest); The population with moderate strength refers to the population with the greatest strength within a certain territory. Because the government often needs to increase the population in order to achieve political and military goals, the population with medium strength is always greater than the population with medium economy. Suowei pays attention to the influence of economic growth factors such as technology on population capacity, thinks that technological progress is conducive to raising the moderate population for a long time, and puts forward the concept of "moderate growth", thus developing the early static moderate population theory into a dynamic moderate population theory.