Inflation & Deflation
Why Your Money Quietly Shrinks While You Sleep
Inflation isn't something that happens to prices — it's something that happens to the meaning of money itself.
The Idea
Most people think of inflation as prices going up. That's true, but it's the wrong frame — because it puts the focus on goods, when the more revealing story is about money. When inflation rises, each unit of currency you hold commands less of the world than it did before. The goods haven't changed; the measuring stick has. So what bends the measuring stick? There are a few distinct mechanisms, and confusing them leads to bad thinking and worse policy. The first is demand-pull inflation: when an economy is running hot — people have more to spend, credit is cheap, employment is high — spending outpaces the capacity to produce. Too much money chases too few goods, and sellers raise prices because they can. The second is cost-push inflation: when the cost of making things rises — energy, labour, raw materials — producers pass those costs on. Supply shrinks or becomes more expensive; prices climb even if demand hasn't moved. The third, and most underappreciated, is expectations. If workers believe prices will rise, they demand higher wages. If businesses expect costs to rise, they raise prices preemptively. Inflation can become self-fulfilling — a coordination problem as much as an economic one. Central banks spend enormous energy managing not just the money supply but the story people tell themselves about the future. None of these causes operates cleanly in isolation. Real inflations are usually a tangle of all three, which is why they're so devilishly hard to tame without overcorrecting.
In the World
In 2021, as economies reopened after pandemic lockdowns, the United States experienced its sharpest inflation in four decades — peaking above eight percent by mid-2022. What made it a textbook case of tangled causes was that all three mechanisms arrived simultaneously. Demand surged: governments had injected enormous stimulus into household accounts, and consumers, freed from lockdown, went on a spending spree — particularly on goods, since services were still restricted. At the same time, supply chains were in chaos. Semiconductor shortages stalled car production. Container ships queued outside ports for weeks. The cost of shipping a standard container from Shanghai to Los Angeles multiplied roughly tenfold at its peak. This was cost-push in real time. Then came the expectations spiral. Workers, watching their grocery bills rise, bargained for higher wages. Businesses, anticipating further cost increases, raised prices ahead of them. The Federal Reserve — the US central bank — had initially described the inflation as "transitory", expecting supply chains to normalise and calm things down. That miscalculation matters because central bank communication is itself a tool. When the Fed eventually pivoted to aggressive interest rate rises — the fastest tightening cycle in decades — part of what it was doing was resetting expectations: signalling credibly that it would prioritise price stability, even at the cost of slowing growth. The episode was a live demonstration that inflation is never just one thing — it's a system, and pulling one thread tightens others in unpredictable ways.
Why It Matters
Understanding what actually drives inflation changes how you interpret the financial news you encounter — and how you make decisions when prices start moving. When inflation rises, the instinct is often to blame the most visible culprit: petrol prices, supermarket markups, corporate greed. Those may be real factors, but they're rarely the whole story, and reacting to the symptom rather than the cause tends to produce poor thinking. More practically: the type of inflation determines how long it lasts and how it should be handled. Cost-push inflation driven by an external shock — say, a war disrupting energy supply — may ease on its own once the shock passes. Demand-pull inflation baked into expectations can persist for years if left unaddressed. Knowing which you're in changes how worried you should be about the purchasing power of your savings, how you think about locking in fixed-rate debt, or whether a pay rise you've just received is genuinely an improvement or simply keeping pace. Inflation is, at its core, about the reliability of money as a promise. When you understand what strains that promise, you're better placed to make decisions that hold their value — not just today, but across time.
A Question to Ponder
If inflation is partly driven by what people collectively expect to happen, who — or what — should we trust to set those expectations?
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