No, allocation will take place one way or another. With a large crowd, seats could be allocated through queuing or even violence. Assume that the opportunity cost of one more Das Kapital is always two The Wealth of Nations . Also assume the economy can produce a maximum of 100 copies of Das Kapital. Bowed PPFs are caused by specialized resources which lead to increasing opportunity costs.
Higher incomes reduce the demand for inferior goods.
Assume corn chips are complementary to macaroni and cheese. Our demand for this good will decrease. This was not the case here because the lower price was caused by a reduction in the demand for the original good. Less of both goods will end up being consumed. Give an example of something that causes an increase in supply.