This paper argues that trade specialization played an indispensable role in supporting the Industrial Revolution, allowing the economy to shift resources to the manufacture without facing food and raw materials shortage. In our arti cial economy, there are two sectors agriculture and manufacture...

This article investigates the causes in the reduction of labor force participation of the old. We argue that the changes in social security policy, in technology and in demography may account for most of the changes in retirement over the second part of the last century in the U.S. economy. We...