Why do we have money?

Money was invented because trade would be difficult without it. For example, if you are a hatter in need of legal advice, then without money, you have to find a lawyer who craves a hat. That is unlikely to happen. Maybe there is a fisherman dreaming of a hat, but he can’t give you legal advice. Maybe there is a lawyer in need of a hairdo instead of a hat. With money, all these problems disappear like magic. You can buy the services of the lawyer so that she can go to the barber. After that, the barber can buy some fish so that the fisherman can buy a hat from you.

Despite these mind-blowing advantages humans didn’t need money for a long time because they lived in small bands and villages where everyone depended on each other and everyone helped each other. This meant, for example, that when a fisherman needed a hat, you would make a hat for him, and if you needed anything, someone else would provide it to you. You did someone a favour so that he or she was obliged to do something back. Villagers produced most of what they needed themselves. Trade with the outside world was limited and was done with barter.

Uses of money

Later cities, kingdoms and empires emerged. People living in cities, kingdoms and empires didn’t know each other so it became difficult to track whether or not everyone was contributing. Favours and obligations didn’t suffice. They were replaced by a formal system for making payments and tracking contributions and obligations. Commerce and tax collection needed a means of payment as well as administration. It is therefore not a coincidence that writing and money were invented around the same time in the same area. The earliest writings were bookkeeping entries. Money has the following uses:

• buying and selling stuff (payment) so money is a medium of exchange
• saying how much something is worth, so money is a unit of account
• keeping track of contributions and obligations (saving and borrowing) so money is a store of value.

Money being a medium of exchange as well as a store of value is like your pet being a cat as well as a dog. The result is not really a success. The parts of the pet may often quarrel, for example, because the dog part wants to play while the cat part wants to sleep. If someone keeps some money for a rainy day and does not spend it, others cannot use this money for buying stuff. And this can be a problem. A simple example can explain this.

Imagine that everyone decides to save all his or her money. Nothing would be bought or sold anymore. All businesses would go bankrupt and everybody would be unemployed. All the money that has been saved would buy nothing because there isn’t anything to buy anymore. This is a total economic collapse.

In reality, it doesn’t get that bad as people always spend on basic necessities like tablets and mobile phones, and perhaps food. When people only spend money on necessities there is an economic depression, which is not as bad as a total economic collapse but still very bad. Saving can make you poorer, but only when there are too many savings already. Savings are used to invest in businesses and hire workers to make products and services. Only if there are more savings than investments, does money remain unused.

The value of money

Money has no value when there isn’t any stuff to buy or when there aren’t any other people to trade with. Imagine that you get the offer to be dropped alone on a remote and uninhabited island in the Pacific with 10 million euros. Probably you would decline the deal, even if you can keep your mobile phone. It is other people and stuff that give money its value. But how? The answer is remarkably simple. The value of money is just a belief.

People are willing to work for money and sell their stuff for money. And because others do this, you do the same. For example, you may think that euro notes have an appalling design as well as an unpleasant odour, but nevertheless, you desire to own them because other people want them too. The euro’s value is based on the belief that other people accept euros for payment.

This is just a belief as the following example demonstrates. Suppose that you wake up one day to hear on the news that the European Union has been dissolved overnight. Suddenly you may have second thoughts about your precious stockpile of foul-smelling unstylishly decorated euro banknotes.

You may ask yourself in distress whether or not your precious bank notes still have any value. What is the value of the euro without the European Union? You may find yourself hurrying to the nearest phone shop in an effort to exchange this pile of banknotes for the latest model mobile phone.

And to prove this point even further, suppose that the phone shop gladly accepts your euros. Suddenly they become desirable again and you may start to have second thoughts about that latest model you are about to buy. It may not remain hip for much longer, so you may change your mind again and prefer to keep your precious euros because there may be a newer model next month. So, because the shop wants your euros, you wants them too.

Types of money

At first, money was an item that people needed or desired. Grain was one of the earliest forms of money. Everybody needed food so it was easy to make people believe that others accept grain for payment. In prison camps during World War II cigarettes became money because they were in high demand. Even non-smokers accepted them because they knew that other people desired them very badly. For that reason, cocaine can be money too.

Wares like grain, cigarettes and cocaine have disadvantages. They degrade over time so they aren’t a very good store of value. This makes them a great medium of exchange because people won’t save them. An example can demonstrate this. Imagine that apples are money and you want to buy a house. A house costs 120,000 apples but your monthly salary is just 2,500 apples of which you can save 1,000. It takes 10 years of saving to buy a house. Soon you will discover that apples rot and that you will never be able to buy a house. Then you will spend all your apples right away.

Saving is difficult with apples. This is where gold and silver come in. Gold and silver do have not much use, but humans were always attracted to shiny stuff. Gold is rare so a small amount of gold can have a lot of value because some people feel a strong desire for shiny stuff. Gold and silver coins can be made of different sizes and purity so that they are suitable for payment and can be used as a unit of account.

More importantly, gold and silver do not deteriorate in quality like apples, grain or cigarettes. They do not even rust after 1,000 years. This makes gold and silver an excellent store of value. But this should make us suspicious. A perfect cat makes a lousy dog so a perfect store of value can fail the test for being a good medium of exchange. People can store gold and silver so that there is less money available for buying and selling stuff. And this can cause an economic depression as we have seen.

Governments create money too, for example by printing “10 euro” on a piece of paper. Governments require by law that this money should be used for payments and taxes. This makes people believe that others accept this money too. Government money is called fiat currency or simply currency. The authority of a government is limited to the area it controls so in the past government currencies had little value outside the country itself unless this money consisted of coins containing gold or silver.

In fact, another reason why gold and silver are attractive as money is that the value of gold and silver does not depend on the authority of a government. This made gold and silver internationally accepted as money. In the 19th century, most government currencies could be exchanged for a fixed amount of gold. This is the gold standard. The gold standard boosted trade because gold was internationally accepted as money.

Most money is debt

Debts can have value and so debts can be money too. This may seem strange or even outrageous, but money is just a belief. For example, money is the belief that you can exchange a hat for money and then exchange this money for legal advice. Hence, if you believe that the debtor is going to pay, you can accept his or her promise to pay as payment. And if others believe this too, you can use this promise to pay someone else.

So if the fisherman promises you to pay next week for the hat you just made, you could say to the lawyer that you expect the fisherman to pay in a week, and ask her if you can pay in a week too. The lawyer could then ask the same of the barber and the barber could ask the same of the fisherman. If all debts cancel out then there is no need for cash. Most of the money we currently use is debt. In most cases, debts don’t cancel out and there are many more people involved so it would be complicated to keep track of all debts and savings. That is where banks come in.

Featured image: Close up of coin hoard CC BY-SA 2.0. Portable Antiquities Scheme from London, England (2010). Wikimedia Commons.

Other images: Nickelodeon character CatDog, Sméagol character from The Lord of the Rings [copyright info]