Scarcity

Scarcity is an important idea in economics. It means that there is only a limited amount of resources—like money, time, and materials—to make and do everything people want. Because of this, people and societies must decide how to use these limited resources wisely.

When something is scarce, it might be hard to get or afford. For example, there may not be enough food, water, or jobs for everyone. This idea of scarcity helps explain why prices change and why some things cost more than others.

Economists study scarcity to understand how people make choices. When resources are limited, people must choose what is most important to them. This idea is central to many economic theories and helps explain how markets and economies work.

Concept

Economic scarcity means that there is only a limited amount of resources to meet many human wants. As Samuelson explained, this is because we can only produce a certain amount of goods with the resources and technology we have, which is outlined in the production possibility curve (PPC). If we could produce endless goods and satisfy all wants, there would be no such thing as scarce goods.

Scarcity isn't just about not having enough resources. It also comes from how humans use and manage those resources. There are two types of scarcity: relative and absolute.

Thomas Robert Malthus talked about absolute scarcity in his 1798 book An Essay on the Principle of Population. He believed that when food production increases, populations grow too, which brings us back to the same level of food per person. This idea is called the "Malthusian trap".

Lionel Robbins focused on relative scarcity. He said that economics studies how people make choices when they have limited resources but many wants. This means people must decide what to give up to get something else they want.

Today, scarcity means there will always be a gap between what we have and what we want. Because of this, people must compete for resources, and prices help decide who gets what. For example, air is very important but not scarce because it is everywhere, while gold is scarce because it takes a lot of effort to find and process.

Scarce goods

A scarce good is something that many people want but there isn't enough of it available, especially when the price is very low. Because there isn't enough, people might argue about who should get it.

Scarcity can happen in three main ways. First, when more people want something but the amount available doesn't change, this is called demand-induced scarcity. Second, supply-induced scarcity happens when there is very little of something available compared to how much people want it. This can be due to things like cutting down too many trees or not enough rain. Lastly, structural scarcity occurs when some people can't get what they need because of political problems or where they live. For example, some countries in Africa don't have enough water and must travel to get it or make deals with other countries that have water. When there isn't enough of something, it can lead to big arguments and problems in countries.

Nonscarce goods

Some things are not scarce because there is so much of them that everyone can have all they need. These are called free goods. Even though they may be very important for us to live, they do not have value in the way that economists think about value because there is plenty of them.

For example, air is a free good because there is enough for everyone, and one person breathing it does not stop another person from breathing it too. A good can be free if it exists forever, if no one really owns it, or if it can be made again and again without running out.