EPISODE · May 2, 2026 · 5 MIN
Fundamentals of Investing - Episode 1 - What is Money?
from The Unlearned Investor Podcast · host The Unlearned Investor
Disclaimer: For those of you who have read my article Why Does the World Go Crazy for Gold?, the majority of the section on this article will be a repeat.Welcome to the first episode in our series on investing fundamentals. Before we can talk about stocks, bonds, or real estate, we have to understand the very foundation of the global economy: the stuff in your wallet (or on your banking app).The Circulation Paradox: The Story of the $100 BillTo understand what money actually is, consider this story of a small town in debt:A wealthy tourist enters a local hotel and lays a $100 bill on the counter to check out the rooms.* The hotel owner takes the bill and runs to the butcher to pay his debt.* The butcher takes the $100 and pays the farmer.* The farmer takes the bill and pays his mechanic.* The mechanic runs back to the hotel and pays off his room bill.At that moment, the tourist comes back downstairs, says the rooms aren’t to his liking, picks up his $100 bill, and leaves. No one produced anything, and the physical money is gone—yet the entire town is now debt-free.The Lesson: This story highlights a fundamental economic truth: Money acts as a clearing mechanism for promises. It isn’t the value itself; it is the accounting system we use to track who owes what to whom.To be honest, in a perfectly small world, people wouldn’t need money if they could perfectly track what they owe and what they are owed. In a tiny village, you can tally favors among neighbors and work extra to clear a deficit. However, in our vast and open modern world, establishing those personal connections with every merchant or producer is impossible. That is why we need money as a universal medium of exchange—it replaces the need for personal trust with a trusted, neutral tool.What is Money?At its core, money is a tool. It is a medium of exchange that acts as a universal language for value. Instead of needing to find someone who wants exactly what you have and has exactly what you want, money acts as the “middleman” that makes trade possible.The Evolution of Exchange: From Barter to BullionThe Barter System and Its Fatal FlawsBefore money existed, humanity relied on the Barter System. If you were a fisherman and you needed shoes, you had to find a shoemaker who happened to be hungry for fish. This system had three massive problems:* The Double Coincidence of Wants: You have to find someone who wants what you have at the exact time you want what they have.* Perishability: If you trade in fish or apples, your “wealth” rots within a week.* Indivisibility: You cannot trade “half a cow” for a loaf of bread without killing the cow and losing its proportional value.The Reign of Gold: The “Goldilocks” ElementTo solve these problems, the world wanted to find a medium that could hold value for goods and services over time. To decide on the qualities of that medium, the philosopher Aristotle defined four laws for “good money”:* Durable: It shouldn’t rot or decay.* Portable: You can carry high value in a small space.* Divisible: You can break it into smaller units without losing value.* Fungible (Uniform): One unit must be identical to the next.With these laws in mind, humanity essentially “interviewed” the Periodic Table. Most elements were disqualified almost instantly:* The Gases and Liquids: You can’t carry nitrogen in your pocket, and mercury is liquid at room temperature (and toxic).* The Volatile: Elements like Sodium or Lithium are “reactive”—they catch fire or explode if they touch water.* The Radioactive: Elements like Uranium would literally kill the holder.* The Common Metals: Iron and Lead are easy to find, but they rust or corrode.This left the “Noble Metals.” Silver tarnishes. Platinum and Palladium were too rare and required heat far beyond the reach of an ancient furnace to melt.Gold was the “Goldilocks” of the group. It was chemically immortal, dense, and naturally limited. By this process of elimination, gold became the “Golden Constant”—the first global language of value. That’s how gold became the world’s money.The Paper Revolution and the “Great Delinking”The move to paper was a change in convenience, not value. In the 17th century, merchants began storing their gold with Goldsmiths for safekeeping. In return, the Goldsmith gave them a paper receipt. Soon, merchants realized they could just trade the receipts. This was the birth of Representative Money.The 1971 Nixon ShockBy the late 1960s, the U.S. was printing more dollars than it had gold to back them. On August 15, 1971, President Richard Nixon “temporarily” suspended the dollar’s convertibility into gold. This event, known as the Nixon Shock, changed everything. For the first time in history, the world moved to Fiat Currency—money backed by nothing but government decree and public faith.Money as a “Promise of Labor”Think of money as a “token” for human effort. When you hold a $10 bill, you are holding a promise that you can exchange it for $10 worth of someone else’s time and labor.Conclusion: The “Print” Button and Your WealthUnlike gold, which must be physically mined with great effort, modern money can be created by central banks at the click of a button.If money is a “promise of labor,” but the government can create billions of new “promises” without any new labor actually being performed, the value of every existing promise begins to shrink. This is the root of Inflation—the rate at which the general level of prices for goods and services is rising, and, subsequently, purchasing power is falling.We shall see exactly how this works and the powerful role of Central Banks in our next episode.Thanks for reading! This post is public so feel free to share it.This Substack is reader-supported. To receive new posts and support my work, consider becoming a free or paid subscriber. Get full access to The Unlearned Investor at unlearnedinvestor.substack.com/subscribe
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Fundamentals of Investing - Episode 1 - What is Money?
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