What best explains why real GDP per person is always driven to the subsistence level in the classical model?

Question

Quizplus · Accepted Answer

In the classical model, population growth increases the supply of labor. According to the Malthusian theory, which is part of the classical model, when real GDP per person rises above the subsistence level, the population tends to increase because of higher birth rates and lower death rates. This increase in population, in turn, increases the supply of labor, which eventually drives real GDP per person back down to the subsistence level as resources become more thinly spread across a larger population.

What Best Explains Why Real GDP Per Person Is Always