1.1 Scarcity

Scarcity is the core problem

Scarcity means resources are limited while human wants are unlimited. Because we can't have everything we want, individuals, businesses, and governments must make choices about how to use limited factors of production: land, labor, capital, and entrepreneurship. Scarcity is the reason economics exists as a field of study.

Scarcity forces choices and trade-offs

Because resources are scarce, every choice involves a trade-off — gaining more of one thing means giving up another. This leads to opportunity cost, the value of the next-best alternative given up when making a decision. Scarcity applies to individuals (limited time/money), firms (limited resources), and society (limited resources for production).

Scarcity vs. shortage

Don't confuse scarcity with a shortage. Scarcity is a permanent condition — resources are always limited relative to wants. A shortage is temporary, occurring when quantity demanded exceeds quantity supplied at a given price, often correctable by price changes. Scarcity exists even when there is no shortage in a market.

Key terms

Scarcity

The condition of having limited resources relative to unlimited human wants; the basic problem economics studies.

Factors of production

Land, labor, capital, and entrepreneurship — the resources used to produce goods and services.

Opportunity cost

The value of the next-best alternative given up when making a choice.

Trade-off

Giving up one thing to gain another due to limited resources.

Shortage vs. Scarcity

A shortage is a temporary market imbalance (quantity demanded > quantity supplied); scarcity is a permanent condition of limited resources.

Try an AP-style question

What is her opportunity cost of attending the concert?

1. $30
2. $50
3. $80
4. $130