Verschuivingen in PPF

A rotation in the production possibilities frontier represents a change in the efficiency of resources, enabling increased production of one good without sacrificing the other.

In contrast, a shift in the production possibilities frontier is a change in the position of the entire curve. It indicates a difference in the economy's output for both goods. 

A rightward shift in the curve indicates economic growth, showing that the economy can produce more goods.

It is due to technological advancements or increased resources. For example, if oil becomes more readily available due to new extraction technologies, it provides the economy with additional resources that can be utilized for various sectors. This can increase overall production, shifting the curve rightwards.

Conversely, a leftward shift shows that the economy can produce less goods.

It is due to the depletion of resources or the obsolescence of technology. For example, a tsunami leading to the loss of natural and human resources shifts the curve leftward.

The shift in the production possibilities frontier is a powerful indicator of changes in the total production capacity of an economy.