Es ist Berlin. 1923. Berlin. A man walks into a bakery carrying more money than his father might have earned in his entire lifetime. Does that mean he's rich? Well, it might not even buy him dinner. Prices are changing by the hour. Workers are paid twice a day because waiting until evening could mean watching half of their wages disappear. Banknotes are counted in millions, then billions, then trillions. Money's everywhere. And somehow, nobody seems to have enough of it. This is an extreme example of something much more common. The coffee you once bought for $2 is now $4. The house your parents bought for $80,000 now sells for $400,000. The numbers get larger, but things themselves aren't necessarily getting better. Something else is changing. The money, the value that we collectively agree upon when we exchange money for something tangible. Why does money lose its value? Maybe a better question is: why does everything else become more valuable? The truth is that more available money, a growing population, and higher demand leads to us chasing limited resources. Think of the least expensive things that money can buy: water, salt, grain, rice. There's an abundance of these things. But abundance alone doesn't determine price. Grain and rice prices can still spike dramatically when harvests fail or supply chains break, and clean water can be priceless when it's scarce. The price of something isn't really a measure of how important it is. As much as it is a negotiation between what we have, what we want, what we're willing to give up for it. Money is just one side of the negotiation. Because money is trust, you accept a dollar today because you assume someone else will accept it tomorrow. And when that confidence begins to wobble, the very thing holding everything together can cause it to collapse. Inflation can come from wars, shortages, government spending, monetary expansion, collapsing production, newfound treasure, or sometimes something a lot harder to quantify, fear. Usually it's some messy combination of all of these things, but underneath it, it's the same relationship between money we use and the things we're trying to buy. And then there's the trust. Because money only works if we all collectively agree that it works, you accept a dollar today because you're reasonably certain someone else will accept it tomorrow. Break that confidence, and the paper doesn't change in your wallet, the number printed on it's exactly the same. The president's face is the same. What changes is what someone is willing to give up for it. Long before anyone could fire up a printing press, rulers figured out how to make more money. In ancient Rome, a merchant might drop a denarius onto a wooden counter and hear the reassuring sound of silver. The emperor's face was stamped on it, soldiers were paid with it, merchants accepted it. Rome said it was money, and for the empire with roads to build, borders to defend, and armies to feed, it needed a lot of them. So take a silver coin, melt it down, mix it with some cheaper metals, strike some new coins, same emperor, same face, same denomination, almost the same coin, just a little bit less silver, do it again, and the imperial treasury stretches a little further. I hope this illustrates that inflation is far older than paper or central banks. Give a government a war, an army, bills it can't afford, human creativity tends to take care of the rest. After the Romans, the Europeans sailed west and found mountains of silver. Imagine a Spanish ship crossing the Atlantic, sitting low in the water under the weight of precious metal pulled from the Americas. This is real money, not paper or credit, not digits glowing on a computer screen. Actual silver. Spain had found a cheat code. They got what seemed like a limitless supply all at once. But what is silver really? What's its utility? There wasn't suddenly more fields of wheat, more cattle, more houses, or more hours in the day. There was simply much more silver competing for them. Prices climbed across Europe during what was known as the Price Revolution. The coins were still silver, the bread was still bread, but year after year it took more coins to buy the same loaf. More silver didn't mean more wealth, it just changed the negotiation. Centuries later, paper made the process much easier. Revolutionary America printed continentals. Weimar Germany printed marks. Zimbabwe printed dollars with denominations that looked like typos. The causes were different, but each of these civilizations eventually confronted some version of the same impasse. You have more money than you could possibly imagine, but you're still poor. So let's spend a little more time in Germany after World War I. Deutschen nach dem Ersten Werklig. Millions were dead or wounded after the war. The Kaiser was gone. A new government was trying to hold together a young democracy while political violence spilled into the streets. The victorious Allies had imposed enormous reparations at the Treaty of Versailles. The German government was already carrying debts accumulated during the war, and much of that war has been financed with the assumption that Germany would win and eventually make someone else pay the bill. It didn't. The government didn't have much of a choice, a choice that some of us wish we had when we go into debt. It had to print money. In 1923, when Germany fell behind on reparation payments and French and Belgian troops occupied the Ruhr, das Ruhgebiet, the industrial heart of the country, German workers responded with passive resistance, refusing to work while the government promised to keep paying them anyway. Factory production slowed, coal and goods stopped in their tracks, the revenue stopped coming in for taxes. But the money machine kept running. More marks entered an economy, producing fewer things, and the exchange rate collapsed. Prices stopped rising by the year, then by the month, then by the week. Eventually prices would have to be written on chalkboards so that they could be erased as prices rose throughout the day. Savings that German citizens had accumulated over a lifetime vanished. Suddenly that pension that was supposed to sustain you in retirement was next to worthless. The people were losing faith that the mark meant anything at all. And then suddenly Germany killed the mark. In November 1923, the government introduced the Rindenmark, limited its issuance, stopped financing its deficits with an endless supply of new money, and began restoring order. The printing presses slowed, prices stabilized, wheelbarrels started to disappear, eventually reparations were structured and foreign capital began flowing back into Germany. But the damage was already done. You could replace a currency, but you couldn't replace a lifetime of savings that had vanished. The pension that you had worked 30 years for didn't come back. The family that had sold a house only to watch the proceeds become worthless almost overnight wasn't made whole again. And maybe most importantly, you couldn't announce that people should trust money again. You can't make people trust money. An entire generation had watched their truth dissolve right before their eyes. Living in the United States, I have to constantly remind myself that money is a concept because we've never lived in a society at a time of greater monetary stability and strength. But those foundations are not exempt from crumbling. Nothing lasts forever. While Weimar-style hyperinflation is extremely rare, shadows of the Weimar Republic still exist all over the world. Walk through Buenos Aires a century later. En el Año 2024, 5, 6. The currency is different, the language is different. But listen carefully. You might hear something familiar. Zimbabwe in 2008 had to issue $100 trillion banknotes. Venezuela in 2010. Lebanon in 2019. The Turkish Lira, 2021. We learn from our old mistakes and start to make new ones. Every economic and monetary crisis creates new ideas and procedures, but eventually, just like us, ideas die. And maybe that's the deeper point. Money represents a claim on wealth. We can create another hundred dollar bill. We can't simply create another acre of Manhattan, another barrel of oil, another bushel of wheat, another skilled surgeon or another hour of someone's life. Civilization can produce more of many of these things, but real creation doesn't come by adding a zero to your bank balance. Ultimately, our wealth is the real stuff that money allows us to do. Money is just the language with which we've all agreed to communicate. Which brings us back to the mundane: a cup of coffee. Your grandfather might complain and reflect on a time where he could get a cup for a dime. Your parents remember 50 cents. You remember a dollar or two. Today, someone will hand over $6 gladly for a venti mocha frappuccino with oat milk. From 10 cents to $6, the coffee didn't become 60 times better. What changed was the ruler by which we used to measure its value. From Roman silver to Spanish treasure ships, from Weimar banknotes to numbers blowing on a banking app, we've spent thousands of years changing what money looks like. We've mined it, melted it, diluted it, printed it, and eventually reduced much of it to numbers stored on computers. But underneath all of those inventions, we're still making the same bargain as our ancestors. I'll give you something valuable today because I trust that this money will still buy me something valuable tomorrow. Perhaps that's what the story of inflation is the trust that we all put in tomorrow.