Profit and loss are the market mechanisms that guide what should and should not be produced over the long run.

Profit and loss

Given the universal existence of limited resources and unlimited wants, competition exists in all societies and cannot be abolished by government edict.

Competition

There is always a degree of risk and uncertainty about the future because people are often reevaluating, learning from their mistakes, and changing their minds, thus making it difficult to predict their behavior in the future.

Uncertainty

The desire of bettering our condition comes with us from the womb and never leaves till we go into the grave (Adam Smith). No one spends someone else’s money as carefully as he spends his own.

Self-interest

The key to a higher standard of living is to expand savings, capital formation, education, and technology.

Economic growth

In all voluntary exchanges, where accurate information is known, both the buyer and seller gain; therefore, an increase in trade between individuals, groups, or nations benefits both parties.

Trade

Since most individuals are not self-sufficient, and almost all natural resources must be transformed in order to become usable, individuals—laborers, landlords, capitalists, and entrepreneurs—must work together to produce valuable goods and services.

Cooperation

Differences in talents, intelligence, knowledge, and property lead to specialization and comparative advantage by each individual, firm, and nation.

Division of labor and comparative advantage

Information about market behavior is so diverse and ubiquitous that it cannot be captured and calculated by a central authority.

Dispersion of knowledge

Given the limitations of time and resources, there are always trade-offs in life. If you want to do something, you must give up other things you may wish to do. The price you pay to engage in one activity is equal to the cost of other activities you have forgone.

Opportunity cost

Prices are determined by the subjective valuations of buyers (demand) and sellers (supply), not by any objective cost of production; the higher the price, the smaller the quantity purchasers will be willing to buy and the larger the quantity sellers will be willing to offer for sale.

Price theory

For every cause there is an effect. Actions taken by individuals, firms, and governments have an impact on other actors in the economy that may be predictable, although the level of predictability depends on the complexity of the actions involved.

Causality

Higher wages can only be achieved in the long run by greater productivity, i.e., applying more capital investment per worker; chronic unemployment is caused by government fixing wage rates above equilibrium market levels.

Higher wages

Price-rent-wage controls may benefit some individuals and groups, but not society as a whole; ultimately, they create shortages, black markets, and a deterioration of quality and services. There is no such thing as a free lunch.

Government controls

In all public enterprises, in order to maintain a high degree of efficiency and good management, market principles should be adopted whenever possible: (1) Government should try to do only what private enterprise cannot do; government should not engage in businesses that private enterprise can do better; (2) government should live within its means; (3) cost-benefit analysis: marginal benefits should exceed marginal costs; and (4) the accountability principle: those who benefit from a service should pay for the service.

Public finance

Deliberate attempts to depreciate the nation’s currency, artificially lower interest rates, and engage in easy money policies inevitably lead to inflation, boom-bust cycles, and economic crisis. The market, not the state, should determine money and credit.

Money

Summary the basic principles of economics and sound economic policy.

Economics in one page

What makes it [economics] most fascinating is that its fundamental principles are so simple that they can be written on one page, that anyone can understand them, and yet very few do. — Milton Friedman

Price theory

Similar ideas to Price theory

Definition and application

Share price of a company can rise and fall

Trading in an Equity Market