For most of the twentieth century, economists believed they had cracked the code of business cycles. When growth slowed, you stimulated demand; when inflation ran hot, you cooled things down with higher interest rates. The relationship between unemployment and inflation seemed stable enough to plot on a curve and teach to undergraduates. Then the 1970s arrived and broke everything.
Stagflation—the portmanteau of stagnation and inflation—describes an economy suffering from both rising prices and weak or negative growth at the same time. It is not merely unpleasant; it is theoretically awkward. In the standard Keynesian framework, inflation results from too much demand chasing too few goods. Recession results from too little demand. The two conditions should be mutually exclusive, like being simultaneously too hot and too cold. And yet, for a miserable decade, the world's advanced economies managed exactly that contradiction.
The supply-side revelation
The key insight that stagflation forced upon economists was the distinction between demand shocks and supply shocks. When OPEC quadrupled oil prices in 1973, it did not create excess demand for goods; it destroyed the economy's capacity to produce them cheaply. Factories faced higher input costs. Transportation became more expensive. The productive potential of the economy shrank even as the money supply remained unchanged—meaning the same amount of currency was now chasing fewer goods. Prices rose not because people wanted more, but because there was less to go around.
This matters enormously for policy. If inflation stems from overheated demand, raising interest rates works beautifully: it makes borrowing expensive, cools spending, and brings prices back to earth with only modest pain. But if inflation stems from a supply shock, raising rates does nothing to address the underlying shortage. It simply adds the misery of tight credit to the existing misery of high prices. You cure the fever by killing the patient.
The policy trap
Central bankers facing stagflation confront an impossible choice. If they prioritize fighting inflation, they raise rates and deepen the recession. If they prioritize growth, they cut rates and watch prices spiral further. The United States tried both approaches in the 1970s, with predictably poor results. It was not until Paul Volcker's Federal Reserve induced a brutal recession in the early 1980s—pushing unemployment above ten percent—that inflation was finally wrung out of the system. The cure worked, but the treatment was savage.
The lesson is that stagflation cannot be solved quickly or painlessly. It typically requires either a resolution of the underlying supply problem (new energy sources, restored supply chains, technological breakthroughs) or a willingness to accept deep economic pain in exchange for price stability. Politicians, understandably, prefer neither option. The result is often years of muddling through, with policy lurching between inflation-fighting and growth-supporting in ways that satisfy no one.
Our take
Stagflation's enduring relevance lies not in its frequency—genuine stagflationary episodes remain rare—but in what it reveals about the limits of economic management. Modern central banking rests on the assumption that wise technocrats can fine-tune the economy toward optimal outcomes. Stagflation is the humbling reminder that some problems have no good solutions, only trade-offs between different varieties of suffering. Every policymaker should keep the 1970s in a frame on their desk, not as nostalgia, but as warning.
