Friday, November 29, 2013

The Science of Demand (17) - Unofficial Translation of Steven Cheung's 经济解释 - 科学说需求


Like any kind of sport, competition arising from scarcity has to have game rules. Without rules there is no way to decide winners from losers. Without winners, there is no objective to compete. Athletics has rules, tennis has rules. If there are no rules at all, success or failure cannot be determined. Even when competing under the law of the jungle, the rule is the winner survives while the loser dies.

From the perspective of economics, the relevant rules in people’s daily competition are laws, disciplines, customs, etc. Similar to the rules in sports, these rules restrain competitors from behaving in certain ways under certain circumstances. That is, in a society’s economic competition, the rules, be they laws, disciplines or customs, are all restraining instruments to delineate rights among people. Such delineation of rights is precisely the system of property rights. In Volume III I will expound that when the system of property rights is viewed from a different perspective, the arrangement to restrain competition is the arrangement of contracts. This will be later discussed.

The system of property rights is the rules of competition, which is also a constraint to restrain competitive behavior. The rules are ever-changing if we try to differentiate them in detail, with private property rights being only one of them. It is possible to generalize the system of property rights into a few broad categories, and systematically analyze the impact of the change in each category on human behavior. This is an issue of institutional economics, which I will elucidate in Volume III.

“Property” is no simple word. From the viewpoint of economics, property is a competitive economic good. This is somewhat different from its definition in law. In law, property generally refers to an asset (especially real estate); but in economics, it means not only an asset, but also a consumer good. Scarcity is an element that consumer good and real estate have in common. Both are competitive, and both are economic goods.

As insightfully said by Alchian, the three words property, competition and scarcity are synonymous. Readers should ponder thoroughly about this “synonymous” viewpoint until recognizing that in the society, competition is a ubiquitous concept. Without understanding this generalized “competition” concept, do not expect any significant achievement from studying economics.


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