A Banknote Is a Promise

Pull a bill out of your wallet and look at it.

It’s a piece of paper. Linen and cotton, actually — but still just a flat, printed rectangle. It has no gold behind it. No silver. No commodity of any kind backing it up. Its value exists entirely because enough people believe it has value.

That sounds fragile. And in a sense, it is.

For most of modern history, paper money worked differently. Banks issued notes as receipts for gold stored in their vaults. If you held a banknote, you could walk into a bank and exchange it for the equivalent weight in gold. The paper was a claim on something real. The promise had substance.

This system was called the gold standard. It acted as a natural limit on how much money governments could create — you couldn’t print more notes than you had gold to back them. Governments that tried to cheat were eventually caught out when citizens showed up demanding gold that wasn’t there.

The gold standard wasn’t perfect. But it had one crucial feature: it kept governments honest about the money supply.

Then, one by one, countries started abandoning it. The pressures of wars, recessions, and the desire to spend more than tax revenues allowed made the gold standard inconvenient for governments.

By the time the 20th century was halfway through, the link between paper money and gold was already fraying.

Tomorrow: the exact day the last thread snapped — and what one US president did on a Sunday night that changed money forever.