For most of the twentieth century, economists believed they faced a clean trade-off: tolerate some inflation to keep unemployment low, or accept joblessness to keep prices stable. Then the 1970s arrived and shattered that comfortable assumption. Prices surged while factories idled and unemployment climbed. The monster had a name — stagflation — and it remains the scenario central bankers fear most, precisely because their usual tools seem designed to fight only half the problem at a time.
The impossible combination
The logic of the Phillips Curve, which posited an inverse relationship between inflation and unemployment, dominated postwar economic thinking. Policymakers could supposedly dial up or down along a predictable spectrum. Stagflation revealed this as dangerously incomplete. When oil prices quadrupled following the 1973 embargo, the shock rippled through every corner of the economy simultaneously. Businesses faced soaring input costs and passed them to consumers; consumers, squeezed by higher prices, cut spending; companies responded by laying off workers. The result was inflation above ten percent in the United States alongside unemployment that eventually exceeded nine percent — a pairing the textbooks said could not happen.
The experience forced a painful intellectual reckoning. Supply shocks, it turned out, could push prices and joblessness in the same direction. Worse, if workers and businesses expected inflation to persist, their wage demands and pricing decisions could entrench it regardless of whether demand was strong. Expectations became a variable that mattered as much as money supply or fiscal deficits.
Why the standard playbook fails
Central banks fight inflation by raising interest rates, which cools demand by making borrowing expensive. But when inflation stems from supply constraints rather than overheated spending, rate hikes inflict economic pain without addressing the underlying cause. Tightening into a supply shock risks deepening the stagnation half of the equation while doing little to tame prices. Conversely, cutting rates to stimulate growth can pour fuel on the inflationary fire.
Paul Volcker's Federal Reserve ultimately chose brutal honesty over clever manoeuvre. By pushing rates to punishing levels in the early 1980s, Volcker induced a severe recession but broke the back of inflation expectations. The lesson central bankers absorbed was that credibility matters more than fine-tuning: once the public believes a central bank will tolerate persistent inflation, dislodging that belief requires extraordinary economic pain.
The ghost in modern policy
Every supply disruption since — whether from pandemics, wars, or climate events — prompts anxious comparisons to the 1970s. Central bankers now speak constantly about "anchored expectations," a phrase that would have puzzled their predecessors. They monitor not just current inflation but surveys of where households and businesses think prices are headed. The terror of stagflation has made pre-emption the dominant instinct: act early and aggressively rather than risk letting expectations slip.
This vigilance carries its own costs. Critics argue that central banks have become too quick to sacrifice employment in pursuit of inflation targets that may themselves be arbitrary. The 1970s trauma, in this view, created an institutional bias toward tightness that punishes workers more than necessary.
Our take
Stagflation's enduring power lies in its revelation that economies are messier than models. The 1970s taught policymakers humility about their ability to engineer outcomes and paranoia about losing control of expectations. Whether that paranoia has become excessive is a legitimate debate, but the underlying fear is rational. Once prices and joblessness rise together, there is no painless exit — only choices about who bears the cost of restoring order.
