The nature of the basic economic problem

The economic problem

The economic problem is that people have unlimited wants but only finite (limited) resources to satisfy them. Because we cannot have everything we want; we must choose how to use our scarce resources.

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1. Unlimited wants + finite resources
2. scarcity
3. choice
4. opportunity cost.

That chain is the foundation of the whole course. Every topic later, prices, markets, government policy, trade, is really about how societies make these choices.

Scarcity is not the same as a shortage

Students lose marks by mixing these up, so be precise:

• Scarcity is permanent and affects everyone. Even a very rich country faces it, because its resources are still limited compared with everything its people would like.
• A shortage is temporary and happens in one market, when demand is greater than supply at the current price. A shortage can be fixed; scarcity cannot.

Who faces the economic problem?

Everyone, and the exam often asks about a specific group:

Key definitions

Economic goods and free goods

• An economic good is limited in supply. Producing it uses up scarce resources, so it has a cost and a price, food, clothing, cars, healthcare.
• A free good is unlimited in supply and needs no resources to produce, so it has no price and no opportunity cost, air, sunlight, seawater in the ocean.

Be careful with the word "free". A good handed out at no charge is not a free good if resources were used to make it. Free school meals are economic goods, somebody paid for the food, and those resources could have been used elsewhere.

Free goods are rare, and can stop being free. Clean air is now scarce in many cities, because pollution has made it limited. Once a good becomes scarce, it becomes an economic good, which is why pollution became an economic problem.

Why this matters

Because almost everything we want is an economic good, scarcity forces three questions on every society:

• What to produce?
• How to produce it?
• For whom to produce it?

These are the three basic economic questions, and different economic systems answer them in different ways (Units 2.9 and 2.11).

Worked example

A government has a fixed budget of $50 million and must choose between building a hospital or building twenty schools.

1. Resources are scarce
2. it cannot do both
3. it must choose
4. if it builds the hospital, the opportunity cost is the twenty schools.

Notice that the opportunity cost is stated as the thing given up, not as "$50 million". The money is the same either way; what differs is what the money is used for.

Common exam mistakes

• Saying scarcity means "not having enough money". It means limited resources compared with unlimited wants.
• Confusing scarcity (permanent, everywhere) with a shortage (temporary, one market).
• Calling something a free good just because nobody paid for it.
• Saying rich countries do not face scarcity; they do.
• Forgetting that choice always creates an opportunity cost.

Exam technique

Definitions here must be exact, because these are usually 2-mark questions where a vague answer earns nothing. Learn "unlimited wants and finite resources" and "the next best alternative given up" word for word.

When a question gives you a group, a consumer, a firm, a government, apply the idea to that group specifically. Naming the actual choice in the question earns more than a general statement about scarcity.

Building an answer

2 marks, "Define the economic problem."

The economic problem is that wants are unlimited but the resources available to satisfy them are scarce, so choices have to be made.

Both halves are needed. "Resources are scarce" alone is one mark; the tension between unlimited wants and limited resources is what earns the second.

4 marks, "Explain why scarcity forces a government to make choices."

A government has a limited budget, drawn from finite tax revenue, but the demands on it, healthcare, schools, defence, transport, exceed what that budget can fund.
It must therefore decide which to fund and by how much, and every pound committed to one is a pound unavailable to another. Spending on a new hospital means forgoing the road that money could have built.

The second pair of marks is for showing the choice has a cost, not merely that a choice exists.

6 marks, "Analyse how a shortage of skilled workers affects an economy."

Skilled labour is a scarce factor of production, so a shortage means the economy cannot produce as much as it otherwise could, it operates inside its production possibility curve.
Firms compete for the workers who are available, bidding wages up, which raises costs of production.
Higher costs may be passed on as higher prices, or absorbed as lower profits, which reduces the funds available for investment.
Over time, output per worker and the country's competitiveness both suffer.

The three questions every economy must answer

Every economic system, from a village market to a planned economy, exists to answer the same three questions. Naming them is worth marks on its own.

Microeconomics and macroeconomics

Cambridge retired this as a topic of its own for 2027, but the distinction is still assumed throughout the course, so it belongs here with the basic economic problem.

Syllabus points

• Distinguish between microeconomics and macroeconomics.
• Give examples of microeconomic and macroeconomic decisions and issues.

Two levels of economics

Economics is studied at two levels, and the difference is simply how wide you are looking.

• Microeconomics studies the behaviour of individual parts of the economy, single consumers, workers, firms, and particular markets.
• Macroeconomics studies the economy as a whole, total output, the general price level, total employment, and trade with other countries.

Micro = one market or one decision-maker. Macro = the whole economy added together.

A memory hook: micro means small (like a microscope, looking closely at one thing) and macro means large (the big picture).

What each one studies

Roughly, Units 2 and 3 of this course are microeconomics, and Units 4, 5 and 6 are macroeconomics.

Examples of decisions

Microeconomic decisions:

• A consumer choosing between two brands of shoes.
• A worker deciding whether to change job.
• A firm deciding how many workers to hire, or what price to charge.
• A government putting a tax on sugary drinks to reduce consumption.

Macroeconomic decisions:

• A government deciding how much to spend in total, or what tax rates to set.
• A central bank changing the interest rate.
• A government deciding whether to allow more free trade.

Notice the sugary-drinks tax is micro even though a government made it, because it targets one market. A change in income tax rates is macro, because it affects the whole economy. The decision-maker does not decide which category it is, the scope does.

The two levels are connected

They are not separate subjects. What happens in one market adds up to what happens in the economy, and macroeconomic conditions affect every market.

• If wages rise in one industry; that is micro. If wages rise across the economy, firms' costs rise everywhere and the general price level may rise; that is macro.
• If a recession reduces total incomes (macro), demand falls in individual markets (micro).

Being able to say that the two levels interact is often worth a mark in a longer answer.

Worked example

A government raises the tax on cigarettes.

Looking at the cigarette market alone, the price rises, quantity demanded falls, and smokers pay more. That is microeconomic analysis.

Looking at the whole economy, the tax raises government revenue, which affects the budget and how much the government can spend. It also slightly raises the general price level. That is macroeconomic analysis.

The same policy can therefore be discussed at both levels. If a question asks for micro effects, stay in that one market; if it asks for macro effects, talk about totals for the whole economy.

Common exam mistakes

• Thinking anything a government does is automatically macroeconomics. A tax on one good is micro.
• Confusing the price of one good (micro) with the price level (macro).
• Confusing demand in one market (micro) with aggregate demand (macro).
• Giving a macro example when the question asked for micro, or the reverse.
• Treating the two as unrelated.

Exam technique

Ask yourself: is this about one market or the whole economy? That single question settles almost every classification.

When giving examples, make them specific, "a bakery deciding how many staff to employ" is better than "a firm making a decision".

If asked to explain the difference, define both terms and give one example of each. That structure earns full marks on a 4-mark question.

A real case to quote

Water in Cape Town, 2018. The city came within weeks of "Day Zero", when municipal taps would have been shut off. Water was suddenly and visibly scarce, so choices had to be made: agriculture, industry and households all wanted the same reservoirs. The city rationed by quota and raised tariffs, one allocation by government, one by price.

It is a strong example because it shows scarcity arriving in a resource people assume is free, and both allocation methods operating side by side.

Definitions the mark scheme accepts

Quick revision

• The economic problem = unlimited wants, finite resources.
• Scarcity is permanent and universal; a shortage is temporary and local.
• Scarcity → choice → opportunity cost.
• Economic good: scarce, has a price and an opportunity cost.
• Free good: unlimited, no price, no opportunity cost, and rare.
• "Given away free" does not mean it is a free good.
• Every society must answer: what, how, and for whom to produce.

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