An economic historian is studying a pre-industrial society that maintained a stable population and subsistence-level wages for centuries. Suddenly, a series of inventions dramatically increases agricultural productivity. The historian attempts to use an economic model that primarily focuses on the relationship between population size and the average output per worker to understand this period. What is the most significant challenge the historian will face when using this model to explain the origin of these inventions?

Evaluating an Economic Model's Explanatory Power

Critiquing a Model of Economic Stagnation

Consider an economic model built on two core principles: 1) The total output of an agricultural economy depends on the number of people working the land, with each additional worker contributing less to the total output than the previous one. 2) The population will grow if living standards are above a basic survival level and shrink if they are below it. An economist uses this model to study a historical period. Which of the following questions would be the most difficult to answer using only the components of this model?

Analyzing the Explanatory Limits of an Economic Model

Consider an economic model where the total amount of food produced is determined solely by the number of people farming the land, and where the population size increases or decreases based on whether living standards are above or below a basic survival level. True or False: This model, on its own, provides a complete explanation for the historical development of new farming techniques, such as the invention of the seed drill.

Evaluating a Model's Usefulness for Historical Inquiry

Advising on Innovation Policy

An economic model is constructed based on two principles: (1) The total output of an economy is a function of the size of its labor force, with diminishing average returns to labor. (2) Population size adjusts based on the average standard of living, keeping incomes near a subsistence level. Match each of the following historical phenomena with the model's ability to explain it.

Evaluating Competing Economic Arguments