Biography
"Because people face trade-offs, making decisions requires comparing the costs and benefits of alternative courses of action. In many cases, however, the cost of an action is not as obvious as it might first appear. […] The opportunity cost of an item is what you give up to get that item. When making any decision, decision makers should be aware of the opportunity costs that accompany each possible action. In fact, they usually are. College athletes who can earn millions if they drop out of school and play professional sports are well aware that their opportunity cost of college is very high. It is not surprising that they often decide that the benefit of a college education is not worth the cost."
"If the economy is producing efficiently, scarcity values must be equal to opportunity costs, and their common value is the efficiency price... An economy is efficient, as opposed to just production efficient, if it is impossible to make anyone better off without making someone else worse off. In addition to producing efficiently, the final consumers must have exhausted all possibilities of mutually beneficial exchange. This in turn requires they all face the same market prices and that these are equal to efficiency prices...The case for removing distortions and moving market prices closer to efficiency prices rests on the argument that prices influence production efficiency and the reform will increase production efficiency."