From Fiat to Crypto

Hey you!

Welcome back to "that's what she said", the newsletter that treats you like the intelligent adult you are, not like someone who needs crypto explained via sports metaphors.

I promised you the types of digital assets next, and we are getting there, just not today. Because the more I thought about it, the more I realised I'd be skipping something that actually matters. Therefore, today we're going back to the beginning. What is money? Where did it come from? What's the difference between the version governments control (fiat) and the version no one controls (crypto)? And why does any of this matter?

Also, I am sorry I've been quiet. London happened (business trip, a lot of meetings), and at some point, I got completely soaked in the rain and decided that was a sign to take a few days off from everything.

However, I'm back now, so get yourself comfortable and let's go!

💰 A Brief History of Money

Every currency that has ever existed has exactly one thing in common. None of them is inherently worth anything. They're worth what we all agree they're worth.

Era 1: Barter

For most of human history, people just exchanged goods and services directly. You grow wheat, I make shoes, we trade. Except it's not simple at all, because what happens when you need my shoes but I don't need your wheat? Barter works in small, tight-knit communities where everyone knows everyone and needs are predictable. Scale it up, and it collapses fast.

Era 2: Commodity money

So, humans got creative. They started using objects that everyone could agree had value: animal skins, salt, weapons, and most famously, cowrie shells. Cowrie shells ended up being used as currency for roughly 10,000 years across parts of Africa, Asia, and the Americas. People just collectively decided they were worth something, and for ten millennia, that was enough.

This is the part that matters: the value was never in the object. It was in the agreement about the object.

Era 3: Coins

Around 600 BCE, in the Kingdom of Lydia (now western Turkey), King Alyattes minted what's considered the first official currency — the Lydian stater. Made from electrum, a natural mixture of gold and silver, stamped with images that acted as denominations. This was a big deal. Suddenly, you didn't have to negotiate the worth of your cow every single time you wanted to buy something. The value was standardised, portable, and durable. Lydia became one of the richest empires in the region almost immediately.

Coins spread across the ancient world (Greece, Persia, Rome, China), each civilisation putting its own spin on the model. For centuries, coins were it. Heavy, inconvenient, occasionally melted down by the government when they needed more metal, but functional.

Era 4: Paper money

During the Tang dynasty (618–907 CE), Chinese merchants faced the very modern problem of not wanting to carry enormous quantities of heavy copper coins for large transactions. Their solution was credit notes. One party wrote a note promising to pay the other within a set time frame. The paper itself had no value, but it represented value, and that was enough. By the Song dynasty (960–1279 CE), the Chinese government had formalised this into an actual paper currency system. At its peak, tens of millions of strings of cash coins' worth of banknotes were being issued annually. China ran paper money for over 500 years before the idea seriously caught on in Europe.

Marco Polo visited China in the 13th century and came back to Europe absolutely baffled that the emperor could make people accept paper as payment and that it worked. Europe took its time. The first paper money in Europe appeared in Sweden in 1661. The Bank of England started issuing what they called "running money" around the same time. This paper was backed by something real. The promise was: bring this in, get your metal back.

That promise became the gold standard. By the late 19th century, most major economies had formally tied their currencies to gold reserves — each unit of money was backed by a specific amount of the metal. It created stability and made international trade easier, because currencies could be compared against a common anchor. It also created a hard constraint: you couldn't just print more money than you had gold.

The gold standard began to break down during WWI, when governments needed to spend more than their reserves allowed. It limped along in modified forms for decades. The US formally ended it in 1971 when Nixon "temporarily" suspended the dollar's convertibility to gold. That temporary fix is still in place. And with that, we entered the fiat era: money backed not by gold, not by any commodity, but purely by government authority and collective trust.

Era 5: Crypto

A global financial crisis was triggered by the same banks that were supposed to be safeguarding the system. Millions of people lost their savings, their homes, their livelihoods. Governments bailed out the institutions responsible. And in January 2009, an anonymous person or group called Satoshi Nakamoto launched Bitcoin — a peer-to-peer electronic cash system that required no banks, no governments, and no trust in any institution whatsoever. The fourth era of money had arrived, and we're still figuring out what to do with it.

🏦 Fiat Money

Fiat comes from Latin, meaning "let it be done", which is genuinely the most honest possible name for this type of money, because the entire model is: the government declares it has value, and therefore it does. The euros and dollars in your account are fiat. So, it is basically every national currency in the world right now.

There's no gold in a vault somewhere backing your savings. What backs fiat money is a combination of legal mandate (it's the only currency accepted for taxes and official payments in that country), institutional trust (central banks managing the supply responsibly), and economic stability (the government not completely imploding).

Central banks are the key institutions here. The Federal Reserve in the US, the ECB in Europe, and the NBU in Ukraine — these are the entities that control monetary policy. They set interest rates. They decide how much money exists. They can inject liquidity into the system by buying assets or tighten it by selling them. It's a massive amount of power concentrated in institutions that most people don't fully understand and can't vote for.

Pros

• Stable. Fiat doesn't swing 30% overnight. Inflation erodes it slowly and predictably, but something you can plan around.
• It has infrastructure. Centuries of it. Consumer protections, fraud mechanisms, deposit insurance, and dispute resolution. If someone steals your credit card, you have recourse. If your bank goes under, your deposits up to a certain amount are protected in most developed countries. There's a system, and the system mostly works.
• Universally accepted. Every shop, every landlord, every tax authority takes it. You don't have to explain it or convert it at the door. That ubiquity is genuinely hard to replicate.
• Flexible. Central banks can respond to economic crises by cutting rates, stimulating growth, and managing recessions.

Cons

• Inflation is built in. When governments print more money, existing money loses value. Sometimes gradually, the dollar has lost the vast majority of its purchasing power over the past century. Sometimes catastrophically, for example, Zimbabwe lost about 76% of its currency value in a single year in 2022. Either way, holding cash long-term means losing purchasing power.
• Centralised control. Every decision about your money — interest rates, supply, access — is made by institutions you have essentially no direct input into. In stable democracies with competent central banks, this is mostly fine. In less stable contexts, it's a serious vulnerability. Governments have frozen accounts, devalued currencies overnight, and imposed capital controls that prevented people from accessing their own money.
• Slow and expensive across borders. Sending money internationally involves intermediaries, delays, conversion fees, and correspondent banks, each taking a cut. It's 2026, and wiring money to another country can still take days and cost a meaningful percentage of the transfer.

🤑 Cryptocurrency

Cryptocurrency is digital money that runs on a blockchain (a distributed, public ledger that records every single transaction ever made on the network). The network is maintained by thousands of participants around the world, and the rules are enforced by code.

Your crypto isn't stored anywhere in the way money sits in a bank. What you actually hold is a private key — a string of characters that proves you have the right to move specific funds on the blockchain. This is very different from fiat. In fiat, the bank holds your money, and you trust them to give it back. In crypto, you hold the keys, and the blockchain enforces the rules. It's a completely different trust model.

Bitcoin launched in January 2009, and the timing was deliberate. The idea was a system for electronic transactions that didn't require trust in any financial institution. Transactions would be verified by the network itself, recorded permanently and publicly, and governed by mathematical rules that no single entity could change.

Ethereum launched in 2015 and added programmability: smart contracts, which are pieces of code that execute automatically when conditions are met. This turned the blockchain from a ledger into a platform. Suddenly, you could build financial products, governance systems, marketplaces, and more, all running on decentralised infrastructure.

Pros

• Autonomy. No government can inflate Bitcoin by printing more of it; there will only ever be 21 million. No institution can freeze your wallet without your private key. No bank needs to approve your transaction or take a cut of your international transfer.
• Borderless and fast. You can send money anywhere in the world in minutes without paying 5% in fees to a wire transfer service. For people in countries with unstable currencies or unreliable banking systems, it's genuinely life-changing.
• Transparent. Every transaction on a public blockchain is verifiable by anyone. You don't need to trust a company's audit report — you can check the ledger yourself.
• Fixed supply (for many). Bitcoin will only ever have 21 million coins. No surprise printing, no monetary policy decided in a boardroom you weren't invited to.
• Accessible. No bank account required. If you have internet access, you can participate.

Cons

• Volatile. This makes most crypto unusable as everyday money — if your salary could halve in value before you pay your rent, you'd want your salary in something more boring.
• No consumer protection. There is no crypto equivalent of deposit insurance or fraud protection. Scams are rampant, hacks are common, and user error results in permanent, unrecoverable loss. The decentralisation that makes crypto powerful also means there's no one to call when something goes wrong.
• Regulatory uncertainty. Some countries have embraced crypto, others have banned it, and most are somewhere in between and still figuring it out. That uncertainty creates real risk for anyone using or building on crypto infrastructure.
• Environmental cost. Proof-of-work blockchains like Bitcoin use enormous amounts of energy.

⚖️ Fiat VS Crypto

To remember the difference, let's look at the table below.

The last row is the one that matters most. Fiat asks you to trust governments, central banks, and financial institutions. Crypto asks you to trust code, cryptography, and network consensus. Neither is asking for blind faith — both have track records, both have failure modes, both have legitimate use cases.

The interesting thing is that these two systems are no longer evolving in isolation. Stablecoins sit directly on the border — crypto infrastructure, fiat value. CBDCs (Central Bank Digital Currencies) are governments trying to build blockchain-style efficiency into the fiat system.

Key Takeaways

• Money has never been about the object itself. It's always been about the shared agreement that it has value.
• Fiat money is government-issued, centrally controlled, and stable by design. Its weakness is inflation and the trust it places in institutions.
• Cryptocurrency is decentralised, transparent, and has a fixed supply in many cases. Its weakness is volatility and a lack of consumer protection.
• The differences come down to one fundamental question: who do you trust more — governments and central banks, or math and code?

Final Thought

Every generation thinks the money it grew up with is real money and whatever comes next is fake or dangerous or a scam. People said that about paper when coins were the norm. They said it about fiat when it replaced the gold standard. They're saying it about crypto now.

Maybe crypto doesn't replace fiat. Maybe it doesn't need to. The interesting question isn't "which one wins", it's what the existence of a decentralised, uncontrollable, mathematically-enforced alternative does to the institutions that have held a monopoly on money for centuries. We're watching that play out in real time.

If you learnt something new today, pass it on. Share it with your community. Let's spread the knowledge and level up together.

That's a wrap, normies. Next time, we're finally discussing the types of digital assets. Stay tuned ✨