Chapter 2: The Economic Problem: Scarcity And Choice.

Chapter 2: The Economic Problem:

Scarcity And Choice

The Three Basic Questions

The Economic Problem: Scarcity and Choice

Capital

Factors of production

Production

Inputs or resources

Outputs

Scarcity, Choice, and Opportunity Cost

Scarcity and Choice in a One-Person Economy

Constrained choice and scarcity opportunity costs (e.g. frozen dinner)

Scarcity and Choice in an Economy of Two or More

Decisions must be made about what to produce, how to produce it, and who gets it, in any economy.

Specialization, Exchange, and Comparative Advantage Theory of comparative advantage: Ricardo’s theory that

specialization and free trade will benefit all trading parties, even those that may be “absolutely” more efficient producers.

Scarcity, Choice, and Opportunity Cost (cont.)

Specialization, Exchange, and Comparative Advantage (cont.) Absolute advantage: When a producer has an

absolute advantage over another in the production of a good or service if he can produce that product using fewer resources (including time).

Comparative advantage: When a producer has a comparative advantage over another in the production of a good or service if he or she can produce that product at a lower opportunity cost.

Scarcity, Choice, and Opportunity Cost (cont.)

Scarcity and Choice in an Economy of Two or More

Comparative Advantage and the Gains from TradeIn this figure: (a) shows the number of logs and bushels of food thatColleen and Bill can produce for every day spent at the task and (b) shows how much output they could produce in a month, assuming they wanted an equal number of logs andbushels. Colleen would split her time 50/50, devoting 15 days to each task and achieving total output of 150 logs and 150 bushels of food.Bill would spend 20 days cutting wood and 10 days gathering food.As shown in (c) and (d), by specializing and trading, Both Colleen and Bill will be better off.Going from (c) to (d), Colleen trades100 logs to Bill in exchange for 140bushels of food.

Scarcity, Choice, and Opportunity Cost (cont.)

Capital Goods and Consumer Goods

Building capital means trading present benefits for future ones. In a modern society, resources used to produce capital goods could have been used to produce consumer goods.

Consumer goods are the goods produced for present consumption.

Investment is the process of using resources to produce new capital. In economics, investment always refers to the creation of capital.

Because resources are scarce, the opportunity cost of every investment in capital is forgone present consumption.

Scarcity, Choice, and Opportunity Cost (cont.)

A simple graphic device called the production possibility frontier (PPF) exhibits the principles of constrained choice, opportunity cost, and scarcity.

Production possibility frontier (PPF) is a graph that shows all

the combinations of goods and services that can be produced if

all of society’s resources are used efficiently.

Figure below shows a PPF for a hypothetical economy.

The Production Possibility Frontier

All points below and to the left of thecurve (the shaded area) representcombinations of capital and consumergoods that are possible for the societygiven the resources available andexisting technology.Points above and to the right of thecurve, such as point G, representcombinations that cannot be reached.If an economy were to end up at pointA on the graph, it would be producingno consumer goods at all; all resourceswould be used for the production ofcapital. If an economy were to end upat point B, it would produce onlyconsumer goods.

The Production Possibility Frontier (cont.)

Although an economy may be Operating with full employment of its land, labour, and capital resources, it may still be operating inside its PPF,at a point such as D. The economy could be usingthose resources inefficiently.Periods of unemployment alsocorrespond to points inside the PPF, such as point D.Moving onto the frontier from a pointsuch as D means achieving fullemployment of resources.

The Production Possibility Frontier (cont.)

The PPF illustrates a number of economic concepts. One of the most important is opportunity cost. The opportunity cost of producing more capital goods is fewer consumer goods.Moving from E to F, the number ofcapital goods increases from 550 to800, but the number of consumergoods decreases from 1,300 to1,100.

Scarcity, Choice, and Opportunity Cost (cont.)

Unemployment: During economic downturns or recessions, industrial plants run at less than their total capacity.

Inefficiency: Waste and mismanagement are the results of a firm’s operating below its potential (point D on graph).

The Efficient Mix of Output: To be efficient, an economy must produce what people want. Both B and C in Figure are points of production efficiency and full employment.

Negative Slope and Opportunity Cost: Marginal rate of transformation (MRT): The slope of the production possibility frontier (PPF). The fact that scarcity exists is illustrated by the negative slope of the PPF.

The Production Possibility Frontier (cont.)

Inefficiency

Society can end up inside its PPFat a point such as A by using itsresources inefficiently.If, for example, Ohio’s climate andsoil were best suited for cornproduction and those of Kansaswere best suited for wheatproduction, a law forcing Kansasfarmers to produce corn and Ohiofarmers to produce wheat wouldresult in less of both. In such acase, society might be at point Ainstead of point B.

The Production Possibility Frontier (cont.)

The Production Possibility Frontier (cont.)

Economic growth

An increase in the total output of an economy. It occurs when a society acquires new resources or when it learns to produce more using existing resources. The production and use of new machinery andequipment (capital) increase worker’s productivity. Improved productivity also comes from technological change and innovation.

The Production Possibility Frontier (cont.)

The Production Possibility Frontier (cont.)

Economic Growth Shiftsthe PPF Up and to the Right

Productivity increases have enhancedthe ability of the United States toproduce both corn and wheat. AsTable 2.2 shows, productivityincreases were more dramatic forcorn than for wheat. Thus, the shifts inthe PPF were not parallel.Note: The PPF also shifts if the amountof land or labour in corn and wheatproduction changes. Although weemphasize productivity increaseshere, the actual shifts between yearswere due in part to land and labourchanges.

The Production Possibility Frontier (cont.)

Sources of Growth and the Dilemma of Poor Countries

Capital Goods and Growthin Poor and Rich Countries

Rich countries find it easier thanpoor countries to devote resourcesto the production of capital, and themore resources that flow intocapital production, the faster therate of economic growth.Thus, the gap between poor andrich countries has grown over time.On the left, the rich countrydevotes a larger portion of itsproduction to capital, while thepoor country produces mostlyconsumer goods. On the right, thePPF of the rich country shifts up andout farther and faster.

The Production Possibility Frontier (cont.)

A Graphical Presentation of Comparative Advantage and Gains from Trade

Production Possibilities with No TradeThe figure in (a) shows all of thecombinations of logs and bushels offood that Colleen can produce byherself. If she spends all 30 dayseach month on logs, she produces300 logs and no food (point A).If she spends all 30 days on food,she produces 300 bushels of foodand no logs (point B).If she spends 15 days on logs and15 days on food, she produces 150of each (point C).

The Production Possibility Frontier (cont.)

The figure in (b) shows all of thecombinations of logs and bushels offood that Bill can produce by himself.If he spends all 30 days each monthon logs, he produces 120 logs and no food (point D).If he spends all 30 days on food, heproduces 240 bushels of food and no logs (point E).If he spends 20 days on logs and 10days on food, he produces 80 of each(point F).

The Production Possibility Frontier (cont.)

By specializing and engaging in trade, Colleen and Bill can move beyond their own production possibilities. If Billspends all his time producing food, he will produce 240 bushels of food and no logs. If he can trade 140 of hisbushels of food to that he can move from point F to point F'.If Colleen Colleen for 100 logs, he will end up with 100 logs and 100 bushels of food. The figure in (b)shows spends 27 days cutting logs and 3 days producing food, she will produce 270 logs and 30 bushels offood. If she can trade 100 of her logs to Bill for 140 bushels of food, she will end up with 170 logs and 170 bushelsof food. The figure in (a) shows that she can move from point C to point C'.

The Economic Problem

The three basic questions:

(1) What gets produced? (2) How is it produced? (3) Who gets it?

Command economy is an economy in which a central government either directly or indirectly sets output targets, incomes, and prices. The basic economic questions are answered by a central government.

Laissez-faire economy: Literally from the French: “allow [them] to do.” An economy in which individual, people and firms pursue their own self-interest without any central direction or regulation. The central institution through which a laissez-faire system answers the basic questions is the market, a term that is used in economics to mean an institution through which buyers and sellers interact and engage in exchange.

Market is a mechanism through which buyers and sellers interact to determine prices and exchange goods and services.

Consumer sovereignty: The idea that consumers ultimately dictate what will be produced (or not produced) by choosing what to purchase (and what not to purchase). The mix of output found in any free market system is dictated ultimately by the tastes and preferences of consumers who vote by buying or not buying.

Individual Production Decisions: Free Enterprise: Often the market system is called a free enterprise system.Free enterprise is the freedom of individuals to start and operate private businesses in search of profits.

Economic Systems

Laissez-faire Economies: The Free Market

Distribution of Output

Income is the amount that a household earns each year. It comes in a number of forms: wages, salaries, interest, and the like.

Wealth is the amount that households have accumulated out of past income through saving or inheritance.

Price Theory

Economic Systems (cont.)

Market Equilibrium

Markets are constantly solving the what, how, and for whom problems. As they balance all the forces operating on the economy, markets are finding market equilibrium of supply and demand, which represents a balance among

all the different buyers and sellers in a market. What goods and services will be produced is determined by the dollar votes of consumers How things are produced is determined by the competition among different producers. For whom things are produced depends, in large part, on the supply and demand in the markets for factors

of production. Factor markets determine wage rates, land rents, interest rates, and profits. Such prices are called factor prices.

Adam Smith discovered a remarkable property of a competitive market economy. Under perfect competition

and with no market failures, markets will squeeze as many useful goods and services out of the available

resources as are possible. But where monopolies or pollution or similar market failures become persistent,

the remarkable efficiency properties of the invisible hand may be destroyed.

Mixed Systems, Markets, and GovernmentsThe differences between command economies and laissez-faire economies in their pure forms are enormous. In fact, these pure forms do not exist in the world; all real systems are in some sense “mixed.” that is, individual enterprise exists and independent choice is exercised even in economies in which the government plays the major role. On the other hand, no market economies exist without government involvement and government regulation, even in the U.S.A.