19. If the cross elasticity of demand for good A with respect to good B is –4.4, then good A could be ______ and good B, ______.?

The reason is based on Adam Smith in his two books concerning individualism and freedom.It has been the basis of the free market mechanism until today. In fact, there are many economists who have arguments. For example, we still need the ample on the streets, and so is the economy.

Keynes has suggested that intervention is a must. And mixed economy is the system to go. Europe has done QE with austerity program.

Discipline first ,money later. The US is all for free, but now cannot raise the rate. So the word faster, has doubts.