Money is part of everyday life. But how often do we pause to think about what it really is? We start this course at the absolute beginning: what is money? There’s a good chance you’ll see money in a completely new light.

Money as a medium of exchange

You’re already familiar with the most important role money has: it can be exchanged for something else. This might be a product, like food or a tool , or a service, like a repair. 

In principle, you don’t need money to trade. Historically, people exchanged labour for food, shelter, or tools – but this type of trading breaks down as soon as wants and needs don’t line up. 

Money reduces this friction by introducing ‘liquidity’ and providing a single, liquid (easy to exchange) medium that holds the same value for everyone.

🪙 Cash is highly liquid: you can use it almost anywhere, at any time.

🏠 A house, by contrast, is not liquid – selling it takes time and effort.

Money as a shared agreement

At its core, money works because people agree that it has value. This shared belief – and the trust that others will accept it too – is what makes money useful. This idea of mutual trust can be helpful in understanding the workings behind certain financial crises in history. What happens when this trust is violated? You’ll learn more about this later in the course.

Money makes building wealth possible

Unlike physical items or labour, money is liquid, which allows us to build wealth for the future. Money has made it much easier to save money or invest it in order to grow wealth. It lets value accumulate, move, and work for you — instead of sitting still.

Takeaways

• Money is liquid: it can easily be exchanged for something else
• The value of money is based on shared trust
• Money makes it easier to build wealth