Every year, in a quiet, wood-paneled chamber at the Royal Courts of Justice, a judicial officer known as the King’s Remembrancer presides over one of the world’s oldest legal contracts. Representatives from the City of London arrive to pay a “quit rent”—a token payment that has remained legally binding since the 13th century.
The payment for a piece of land in Shropshire consists of two knives. The payment for a long-lost medieval forge near the Strand is more substantial: six oversized horseshoes and exactly 61 nails.
The ceremony is a frozen piece of history, a portal back to 1235. In that era, 61 hand-forged nails represented a significant transfer of economic value. Iron was a strategic asset, and the labor required to mine, smelt, transport, and forge it into functional goods was the bedrock of industrial power. To own the forge near the Strand was to own a critical piece of the kingdom’s infrastructure.
Today, you can walk into a hardware store and buy 61 nails for a few dollars. They are better, stronger, and more uniform than anything a medieval master could produce, and they represent almost zero meaningful economic effort for a modern worker.
The contract is frozen, but the world has melted. This is the fundamental truth of technological progress: Technology is a deflationary engine for human labor.
The Compression of Scarcity
The story of the nails is the story of humanity. Every major technological leap follows a predictable arc: what was once a scarce, high-skill output is compressed into a cheap, abundant commodity.
This pattern repeats across every industry we have ever touched:
- Textiles: Before the power loom, a single shirt could cost weeks of labor. Today, clothing is so abundant we struggle with its waste.
- Printing: Before Gutenberg, a book was a year-long project for a scribe. Today, the sum of human knowledge is a search query away.
- Lighting: In the 1800s, an hour of light cost several hours of labor (whale oil or candles). Today, it costs a fraction of a cent.
- Photography: What once required chemical mastery and darkrooms is now an effortless, near-infinite byproduct of carrying a phone.
- Computation: The “computers” of the 1940s were rooms full of people; today, billions of calculations happen in your pocket every second for almost zero cost.
In each case, the technology didn’t just make the process faster; it destroyed the old scarcity. It turned a “craft” into a “utility.”
The Cognitive Forge: AI as Deflation
We are now applying this same deflationary pressure to cognition itself.
Just as industrialization made nails cheap, AI is making the generation of code, text, analysis, and imagery cheap. We are entering an era where “writing 500 lines of Python” or “drafting a legal summary” is shifting from a high-value skill to a mass-produced commodity.
It is easy to view this through a dystopian lens—to see only the destruction of old business models. But technological revolutions are rarely about “running out” of work. They are about shifting the frontier of what is possible.
When nails became cheap, we didn’t stop building. Instead, the “blacksmithing” era gave way to the “builder” era. Because the fasteners were free, we could suddenly afford to build structures, cities, and networks on a scale that was previously a fantasy.
Defending Scarcity vs. Building Abundance
The biggest opportunities in history never come from protecting the old scarcity. They come from building on top of the new abundance.
- The blacksmith saw cheap nails as a catastrophe. His identity was tied to the forge, and the collapse of nail prices felt like the collapse of his worth.
- The builder saw cheap nails as a miracle. He didn’t care how the nails were made; he cared that he could now afford to build a thousand houses instead of one.
Today, we face a similar choice in software and knowledge work. We can try to defend the “forging” of code—clinging to the idea that the manual labor of syntax is where the value lies. Or we can become the builders who realize that because intelligence is becoming abundant, we can finally solve problems that were previously too “expensive” to even consider.
The Bottom Line
Every industrial revolution begins by making something valuable feel worthless.
In 1235, 61 nails could pay the rent on a piece of prime London real estate. Today, they are a footnote. This deflation is not a bug; it is the feature that allows humanity to climb higher.
The blacksmith’s identity was the forge. The builder’s identity was the structure. In the age of AI, the winners won’t be those who defend the old scarcity of the “forge,” but those who embrace the new abundance of the “build.”