Utilizing a model of income and population growth specialized to a dual-class (master-slave) economy, we show that the lack of ownership for the majority of people may have been the main culprit why North Korea has remained stagnant in the past. The slave-workers, for whom ownership (and...

Numerical exercises we have performed indicate that when one operates a country as a slavery system, the slaves would end up barely subsisting, whereas the masters could live affluently.What might North Korea do to achieve prolonged economic progresses? The followings appear to be the bare...

Utilizing a simple growth model that includes the energy resource as an essential input, the possibility of a cleaner environment as well as larger income is demonstrated. Growth rates need not be lowered to have a cleaner environment, and the energy output ratio may be reduced. Pollution...