I was thinking about something we often don't question: why do we trust a piece of paper? Like, the real money in your wallet is worth nothing intrinsically, but we keep using it as if it were real gold.

The history of this is quite interesting. Fiat currency, the concept of money without backing by precious metals, originated in China between 960 and 1279, during the Song Dynasty. Before that, the gold standard was the norm: banknotes had value because they could be exchanged for real gold. That made sense, right? But then people realized that this limited the economy, and China was the first to think differently.

It took longer in the West. The first paper note appeared in 1661 in Estonia, with Johan Palstruch. It then spread across Europe, and especially after World War I, the fiat model became the standard.

But why does fiat money work? Basically, because of three things: authority (the government guarantees), usage (the more people use it, the more valuable it becomes), and trust (the population believes it has value). For example, the dollar is strong globally because everyone trusts and uses it. The real, on the other hand, has less international circulation, so it’s worth less.

The benefits are obvious: it’s easy to produce, accepted everywhere, simple to store. But there are serious risks. If the government prints money uncontrollably, inflation skyrockets. And if the population loses trust, the value drops quickly. History is full of hyperinflation examples caused by this.

Now, the interesting part is comparing this to crypto. Bitcoin and other cryptocurrencies are decentralized, with no government control. Their value doesn’t depend on authority but on supply and demand. It’s the opposite of traditional fiat currency.

Thinking about it, fiat money is basically a collective agreement: we agree that that paper has value because the government says so and because everyone accepts it. It works as long as trust exists. Understanding this is essential to grasp why crypto emerged as an alternative and why the current financial system is the way it is.