Foundations of Economics

Economics exists because of one unavoidable fact: resources are limited, and human wants are not. There is only so much time, money, land, labour, and raw material to go around. This is called scarcity — and it applies to everyone, from individuals balancing a budget to governments deciding how to…

Supply and demand is the most fundamental concept in economics. It explains why prices go up and down, why some goods are abundant and others are scarce, and why wages rise in certain industries. Once you understand it, you'll see it operating everywhere — in housing markets, job markets, stock…

Economics is largely the study of how people respond to incentives. An incentive is anything that motivates a person to act in a particular way — a reward for doing something, or a cost that discourages it. People respond to incentives in predictable ways, and understanding this helps you explain…

A market is any arrangement where buyers and sellers come together to exchange goods, services, or resources. Markets don't have to be physical places. The stock market, the job market, and the housing market are all markets — systems where prices emerge from the interaction of supply and demand.

Trade exists because specialisation creates value. When individuals, businesses, and countries focus on producing what they're best at and trade for everything else, everyone ends up with more than they would if each tried to produce everything independently.

Every economy faces the same three fundamental questions: What should be produced? How should it be produced? Who gets it? These are allocation questions — decisions about directing scarce resources across an unlimited range of possible uses.

Money is one of humanity's most important inventions. Before it existed, people traded through barter — exchanging goods and services directly. Barter works in small communities, but it breaks down quickly at scale. Finding someone who has what you want and wants what you have is enormously…

Inflation is the rate at which the general level of prices rises over time. When inflation is positive, each unit of money buys a little less than it did before. A basket of groceries that cost $100 last year might cost $104 this year at 4% inflation.

A dollar today is worth more than a dollar in the future. This isn't just an opinion — it's a fundamental principle of finance called the time value of money.

Every society must answer the same fundamental questions: what to produce, how to produce it, and who gets the output. Different economic systems answer these questions in different ways. Understanding the main systems helps you make sense of economic debates, policy decisions, and the environment…

Gross Domestic Product (GDP) is the total monetary value of all goods and services produced in a country during a given period — usually a year or a quarter. It's the most commonly used measure of the size and health of an economy.

A recession is a significant decline in economic activity lasting more than a few months. The technical definition used in many countries is two consecutive quarters of negative GDP growth, but recessions are typically identified more broadly — incorporating rising unemployment, falling consumer…