Chapter 2: What Is Economics?

Part 2.1 – Understanding the Fundamental Economic Problem

By Dr. Anthony Fok

Introduction

Before students can master demand and supply, inflation, unemployment or international trade, they must first understand one simple but powerful idea.

Every topic in A-Level Economics begins with the fundamental economic problem.

Without understanding this concept, the rest of the syllabus often feels like a collection of disconnected theories and diagrams. Once you understand it, however, you will see that almost every economic issue—from Singapore’s Budget to global trade disputes—can be traced back to the same underlying challenge.

That challenge is scarcity.

Economics is not simply the study of money, businesses or financial markets. It is the study of how individuals, firms and governments make choices because resources are limited while human wants are unlimited.

This chapter introduces the core ideas that form the foundation of the entire A-Level Economics syllabus.

What Is Economics?

Economics can be defined as:

The study of how scarce resources are allocated to satisfy unlimited human wants.

Although this definition is concise, every phrase is important.

• Study – Economics is a social science. It seeks to explain human behaviour and decision-making.
• Scarce resources – Resources such as land, labour, capital and entrepreneurship are limited.
• Allocation – Society must decide how these limited resources should be used.
• Unlimited human wants – People’s desires continue to grow and evolve over time.

Whenever people, businesses or governments make choices about using limited resources, they are making economic decisions.

Economics Is All Around Us

Many students believe Economics exists only in classrooms or examination papers.

In reality, it influences almost every decision we make.

Think about the following questions:

• Should you spend tonight revising Economics or relaxing with friends?
• Should a company invest in a new factory or spend more on research and development?
• Should the Singapore Government allocate more funding to healthcare or public transport?
• Should households save more or spend more during periods of economic uncertainty?

These are all economic questions because they involve choosing how to use limited resources.

Economics is therefore not an abstract subject. It is a practical framework for understanding the choices made by individuals, businesses and governments every day.

Why Does Scarcity Exist?

Imagine a world where every person had unlimited time, unlimited money and unlimited resources.

Would there be any need to choose?

Probably not.

Unfortunately, that world does not exist.

Every society faces scarcity because resources are finite.

At the same time, human wants continue to expand.

As incomes rise, people often aspire to better housing, higher-quality healthcare, overseas travel, newer technology and more leisure.

This combination of limited resources and unlimited wants creates the fundamental economic problem.

Scarcity Does Not Mean Poverty

One of the most common misconceptions among new Economics students is that scarcity means “not having enough.”

This is inaccurate.

Scarcity does not mean a country is poor.

Even wealthy countries experience scarcity.

Singapore, despite being one of the world’s highest-income economies, still faces difficult choices.

For example, the Government must decide how to allocate national resources among:

• Healthcare
• Education
• Defence
• Public housing
• Public transport
• Environmental sustainability
• Digital infrastructure

Increasing expenditure in one area often means fewer resources are available elsewhere.

This is why scarcity affects every economy, regardless of its level of development.

The Four Factors of Production

To understand scarcity, students must first understand the resources used to produce goods and services.

Economists classify these resources into four categories known as the factors of production.

1. Land

In Economics, land refers not only to physical land but also to all natural resources.

Examples include:

• Agricultural land
• Water
• Forests
• Minerals
• Oil and natural gas
• Fisheries

Singapore has limited natural resources and limited land area.

As a result, land is particularly scarce, making efficient land use an important policy issue.

2. Labour

Labour refers to the human effort used in production.

Examples include:

• Teachers
• Doctors
• Engineers
• Construction workers
• Programmers
• Retail assistants

The quality of labour depends on education, training, experience and productivity.

Singapore invests heavily in education and lifelong learning because improving labour quality contributes to long-term economic growth.

3. Capital

Capital refers to man-made resources used to produce other goods and services.

Examples include:

• Machinery
• Computers
• Factory equipment
• Commercial buildings
• Industrial robots

Students often confuse capital with money.

Money itself is not capital in Economics.

Instead, money is used to purchase capital goods.

4. Enterprise

Enterprise refers to the ability to combine the other three factors of production and take risks to create value.

Entrepreneurs identify business opportunities, organise production and make strategic decisions.

Examples include founders of start-ups, restaurant owners and business innovators who introduce new products or services to the market.

Successful entrepreneurship often drives innovation, employment and economic growth.

Unlimited Human Wants

Unlike resources, human wants are virtually unlimited.

Consider the following progression.

A student may initially want:

• A laptop for school.

Later, they may want:

• A faster laptop.
• A larger monitor.
• Better headphones.
• A smartphone upgrade.
• Overseas holidays.
• A car.
• A larger home.

As one want is satisfied, another often emerges.

This explains why demand for goods and services continues to evolve even in high-income economies.

Needs vs Wants

Students should distinguish between needs and wants.

The distinction is useful because many government policies focus on ensuring access to essential needs while allowing market forces greater influence over non-essential wants.

Choice Is Unavoidable

Because resources are scarce, every individual, firm and government must make choices.

For example:

Individuals

A student choosing between revising for an examination and working part-time.

Firms

A business deciding whether to launch a new product or expand into another country.

Governments

A government choosing between investing more in healthcare or public infrastructure.

Every choice involves trade-offs.

Understanding these trade-offs is one of the central goals of Economics.

Dr. Anthony Fok’s Exam Tip

Many students memorise definitions but struggle to apply them.

When revising, always ask yourself:

• Why does this concept matter?
• How would I explain it using a Singapore example?
• What are the implications for consumers, firms and governments?

If you can answer these questions confidently, you are moving beyond memorisation towards genuine economic understanding.

Common Student Mistake

Mistake: “Scarcity means there is not enough of something.”

Better understanding: Scarcity means that available resources are insufficient to satisfy all human wants simultaneously. It exists in every economy because resources are limited while wants continue to expand.

Quick Summary

By the end of this section, you should be able to explain:

• What Economics studies.
• Why scarcity exists.
• Why scarcity affects both rich and poor countries.
• The four factors of production.
• The difference between needs and wants.
• Why all economic agents must make choices.

These ideas form the conceptual foundation for every topic that follows in A-Level Economics.

Coming Up Next

In Part 2.2, we will explore:

• Opportunity Cost
• Decision Making
• Trade-offs
• Production Possibility Curves (PPC)
• Productive Efficiency
• Allocative Efficiency
• Singapore case studies
• Examination-style applications