You walk into a grocery store and see that the price of eggs has gone up. You don’t know why. Maybe avian flu has killed millions of chickens. Maybe feed costs have risen because of a drought in the Midwest. Maybe a new regulation has increased the cost of poultry farming. You don’t know the cause, and you don’t need to. The price tells you everything you need to know: eggs are scarcer than they were last week, and you should use them more carefully. Maybe you buy fewer. Maybe you substitute something else. Maybe you decide it’s not worth making that omelet.
Now multiply that transaction by every product in the store. Then multiply it by every store in the country. Then multiply it by every market in the economy — not just groceries, but steel, lumber, labor, land, capital, shipping, electricity, and financial instruments. What you have is the most sophisticated information-processing system ever created by human beings — a system that no one designed, no one manages, and no computer can replicate. It is the price system, and it is capitalism’s greatest hidden advantage.
The Man Who Saw It
In 1945, Friedrich August von Hayek — an Austrian-born economist working at the London School of Economics — published a paper in the American Economic Review that would become one of the most influential articles in the history of the discipline. Titled “The Use of Knowledge in Society,” it posed a deceptively simple question: What is the fundamental economic problem that any society must solve?
Hayek’s answer was not the one most economists were giving at the time. The standard view held that the economic problem was essentially mathematical: given a set of resources, preferences, and technologies, what allocation of resources would maximize welfare? If you could gather all the relevant information in one place and hand it to a sufficiently intelligent planner, the optimal solution could theoretically be computed.
Hayek argued that this framing was fatally flawed — not because the math was wrong, but because the premise was impossible. The knowledge required to manage an economy does not exist in any one place. It is dispersed across millions of individuals, each of whom possesses a tiny fragment of the total picture. The farmer in Kansas knows the condition of his soil and the state of his equipment. The trucker in Memphis knows which routes are congested and which loading docks are available. The shopkeeper in Cleveland knows which products her customers are buying and which are sitting on the shelf. No central authority can collect, process, and act on all of this information in real time. It changes too fast, it is too granular, and much of it is tacit — known through experience but impossible to articulate in a report.
The price system solves this problem. It does not require anyone to know everything. It only requires each person to respond to the prices they observe. When tin becomes scarce — Hayek’s famous example — the price of tin rises. Users of tin don’t need to know whether the scarcity was caused by a mine collapse in Malaysia or increased demand from a Chinese manufacturer. They only need to know that tin is more expensive, which tells them to use less of it, find substitutes, or delay projects that require it. Tens of thousands of people, most of whom have never met and know nothing about each other’s circumstances, adjust their behavior in the right direction — all without any central coordination.
Hayek called this phenomenon a “marvel.” He wrote that if the price system had been the result of deliberate human design, it would have been acclaimed as one of the greatest triumphs of the human mind. Instead, because it arose spontaneously from voluntary exchange, most people take it entirely for granted — and many intellectuals actively distrust it, preferring the illusion of centralized control to the reality of decentralized coordination.
What Prices Actually Contain
A price is not just a number on a tag. It is a compressed signal that encodes information about scarcity, demand, cost of production, risk, time preference, and opportunity cost — all condensed into a single figure that any person can read and act upon without needing to understand any of the underlying complexity.
Consider the price of a gallon of gasoline. Embedded in that number is information about the global supply of crude oil, the geopolitical stability of producing regions, the cost of refining, the efficiency of pipeline and tanker networks, federal and state tax rates, local competition among gas stations, seasonal demand patterns, the cost of environmental compliance, and the expectations of commodity traders about all of these factors six months from now. No human being — and no committee — can hold all of this information simultaneously. Yet the price of gasoline at your local station reflects all of it, updated continuously, and available to every consumer who glances at the sign.
This is what makes the price system fundamentally different from any alternative coordination mechanism. A central planner attempting to set the price of gasoline would need to gather all of the information listed above — and vastly more — process it, make a judgment, and issue a directive. By the time the directive arrived, the underlying conditions would have changed. The price would be wrong before the ink was dry. And because prices in a command economy carry no real information — they are political constructs, not market signals — no one in the system would know that the price was wrong until shortages or surpluses appeared. By then, the damage would already be done.
Rockefeller and the Price of Light
The power of the price system is not merely theoretical. It has driven some of the most transformative episodes in economic history.
In the 1860s, the primary source of artificial light in America was whale oil — expensive, increasingly scarce, and available only to the affluent. The cost of lighting a home at night was prohibitive for most working families. When petroleum was discovered in Pennsylvania, a new product — kerosene — offered a cheaper alternative. But the early kerosene industry was chaotic, wasteful, and wildly inconsistent in quality. Kerosene from sloppy refiners was dangerously impure; lamp explosions killed an estimated 3,000 Americans per year.
John D. Rockefeller saw this situation not as a crisis but as a price signal. The gap between the high cost of whale oil and the low cost (but poor quality) of kerosene told him that enormous demand existed for a reliable, affordable illuminant. He built his Standard Oil Company around the idea of consistency and efficiency — standardizing refining processes, eliminating waste, developing 300 by-products from each barrel of crude, and relentlessly reducing costs at every stage of production and distribution.
The results were visible in one number: the price of kerosene. From 1870 to 1897, the price fell from 26 cents per gallon to roughly 6 cents — a decline of nearly 80 percent. By the 1870s, middle-class and working-class Americans could afford to light their homes for approximately one cent per hour. Night became productive for the first time in human history for ordinary people. Reading, working, studying, and socializing after dark — activities previously reserved for the wealthy — became accessible to millions.
Rockefeller did not achieve this because a government committee told him to reduce the price of kerosene. He achieved it because the price system told him that vast unmet demand existed, and the profit motive told him that satisfying it would make him extraordinarily wealthy. The same mechanism that enriched Rockefeller — the pursuit of profit through cost reduction — delivered affordable light to every household in America. That is the price system working at its most powerful: private incentives aligned with public benefit through the medium of prices.
What Happens When You Kill the Signal
If the price system is the economy’s nervous system, then price controls are the equivalent of cutting the wires. The signal goes dead. The body stops responding to pain, pressure, and danger. And the damage accumulates silently until it becomes catastrophic.
The most vivid American example occurred on August 15, 1971, when President Richard Nixon announced a 90-day freeze on all wages and prices in the United States. The freeze was intended to combat inflation, which was running at approximately 4 percent — modest by historical standards. Nixon himself privately acknowledged that price controls were a terrible idea. On the White House tapes, he told an aide that “the Goddamned things will not work.” He imposed them anyway, because they were politically popular. Eighty percent of Americans supported the freeze when it was announced.
Milton Friedman, the Nobel Prize-winning economist, immediately predicted the outcome: price controls would produce shortages, black markets, and ultimately higher inflation than if prices had been left alone. He was right on every count.
The initial 90-day freeze turned into over 1,000 days of controls in various phases. When Nixon reimposed a second freeze in June 1973, the consequences were immediate and devastating. Ranchers stopped shipping cattle to market because the controlled prices didn’t cover their costs. Farmers drowned their chickens rather than sell at a loss. Supermarket shelves emptied. In the poultry industry alone, over a million baby chicks were destroyed because the controlled price of chicken was below the cost of feeding them.
The most destructive and lasting effect was on oil and gasoline. Nixon kept petroleum price controls in place even as he relaxed controls on other goods. When the Arab oil embargo hit in October 1973, the price controls prevented the market from adjusting. Prices could not rise to ration the reduced supply, so physical shortages appeared instead. Gas stations ran out of fuel. Lines stretched for blocks. Some stations closed entirely; others stayed open for only a few hours a day. Odd-even rationing was imposed — you could buy gas only on certain days depending on your license plate number.
The gas lines persisted, in various forms, through the remainder of the 1970s under Presidents Ford and Carter. They did not end until President Ronald Reagan decontrolled oil prices in January 1981. Within months, the shortages vanished. Supply increased. Prices stabilized. The market, freed to transmit accurate information again, did in weeks what a decade of government management had failed to accomplish.
The United States was the only major industrialized nation to experience gas lines during the 1970s oil crisis. Other countries — including European nations that were far more dependent on imported oil — allowed prices to rise and adjusted accordingly. The lines were not caused by a shortage of oil. They were caused by a shortage of accurate prices.
The Soviet Price Void
If Nixon’s price controls produced dislocations in a single sector of an otherwise market economy, imagine the consequences of eliminating the price system from an entire economy for seventy years.
The Soviet Union attempted exactly this experiment, and the results were chronicled in the previous installments of this series. But the price dimension of the Soviet failure deserves specific attention, because it illuminates the mechanism of collapse more precisely than any other factor.
In the Soviet economy, prices were set by Gosplan — the state planning committee — based on political priorities rather than economic realities. The price of bread was set low to keep the population fed and quiescent. The price of consumer goods was set high to discourage consumption and redirect resources toward heavy industry and military production. The price of labor was fixed across entire sectors, regardless of productivity or skill. And the price of capital — the interest rate — was effectively zero for state enterprises, meaning there was no signal telling managers whether their investments were productive or wasteful.
The result was an economy in which every signal was wrong. Bread was cheap, so people wasted it — and bakeries lost money on every loaf, which meant the state had to subsidize them, which meant resources were drained from other sectors. Consumer goods were expensive, so people couldn’t afford them — which meant factories produced them anyway (because the plan required it), and the goods sat in warehouses. Labor was priced the same regardless of performance, so workers had no incentive to be productive — “they pretend to pay us, we pretend to work,” as the Soviet joke went. And capital was free, so managers invested in projects with no economic logic — factories that produced goods nobody wanted, in quantities nobody needed, using methods nobody would have chosen if they were spending their own money.
By the 1980s, the Soviet price system — if it can be called that — was a hall of mirrors in which no number reflected reality. Soviet economists themselves knew this. The academician Abel Aganbegyan acknowledged that CIA estimates of the Soviet economy were more reliable than the Soviet Union’s own statistics. Yuri Andropov, the former KGB chief who became General Secretary in 1982, reportedly believed the same. The people running the system couldn’t trust their own data, because the data was generated by a price mechanism that had been deliberately disconnected from economic reality.
The Information Theory of Markets
Hayek wrote his seminal paper three years before Claude Shannon published “A Mathematical Theory of Communication” — the foundational work of information theory. Hayek could not have known, in 1945, the mathematical framework that would later formalize his intuition. But his insight was fundamentally an information-theoretic one: the price system is a communication network that transmits knowledge about the state of the economy from the people who have it to the people who need it, at a speed and density that no alternative system can match.
Modern economists and computer scientists have formalized this insight in various ways. The efficient market hypothesis holds that asset prices in financial markets incorporate all available information — a direct descendant of Hayek’s argument. Prediction markets aggregate dispersed beliefs about future events through prices. Even Wikipedia’s co-founder, Jimmy Wales, has cited Hayek’s 1945 paper as central to his thinking about decentralized knowledge systems.
But the deepest validation of Hayek’s argument is not theoretical. It is historical. Every economy that has allowed prices to function freely has generated more wealth, more efficiently, than any economy that has suppressed or replaced them. Every economy that has interfered with prices — whether through Soviet-style planning, Venezuelan price controls, or Nixon’s wage-and-price freeze — has produced shortages, distortions, and waste. The correlation is perfect. There are no exceptions.
Why This Is Hard to Accept
The price system is difficult for many people to embrace because it is impersonal, unplanned, and sometimes harsh. When the price of housing rises beyond what a young family can afford, it is cold comfort to explain that the price reflects genuine scarcity and that interfering with it will make the problem worse. When the price of insulin is high enough to threaten the health of diabetics, the argument that “the market is working” rings hollow.
These are real problems, and they deserve real solutions — many of which exist within a market framework (subsidies to low-income buyers, increased competition among manufacturers, patent reform). The point is not that prices are always fair. It is that prices are always informative. A high price for housing tells society that it needs to build more housing. A high price for insulin tells society that something is restricting supply or competition. Suppressing the price — through rent control, or drug price caps — eliminates the information without eliminating the underlying problem. Worse, it usually makes the underlying problem harder to solve, because the signal that would have attracted investment, innovation, and competition has been silenced.
The price system is not a moral system. It does not care whether you are rich or poor, deserving or undeserving. It is an information system — the most powerful one ever created. And the societies that respect it, even when its messages are uncomfortable, are the societies that prosper. The societies that suppress it, in the name of fairness or control, inevitably discover that you cannot manage what you cannot measure — and you cannot measure what you have forbidden the market to tell you.
Next in the series: Installment 7 — Failure Is the Feature: Why Capitalism’s Crashes Make It Stronger