1971–1982
The word “stagflation” was ugly, and so was the reality it described. Throughout the postwar golden age, economists had operated on the assumption — grounded in the Phillips Curve — that inflation and unemployment moved in opposite directions. You could have one or the other, but not both simultaneously. The 1970s proved them wrong. Inflation surged into double digits while unemployment rose alongside it. The impossible combination arrived, and the Keynesian policy framework that had guided the industrial democracies for a generation had no convincing explanation for why it was happening and no reliable prescription for what to do about it.
The crisis was not merely technical. It was a crisis of intellectual authority. If the experts were wrong about something this fundamental, what else were they wrong about? The decade between Nixon’s closure of the gold window in 1971 and the peak of Volcker’s interest rate campaign in 1981-82 reshaped economics more thoroughly than any comparable period since the 1930s.
When Richard Nixon suspended the dollar’s convertibility to gold on August 15, 1971, he intended it as a temporary measure. It became permanent. The fixed exchange rate system that had anchored the postwar monetary order gave way to floating rates — currencies bobbing up and down against each other in response to market forces, central bank interventions, and speculative flows. The transition was chaotic. Businesses accustomed to stable exchange rates suddenly faced currency risk. International capital flows, freed from the controls that Bretton Woods had assumed, became larger, faster, and more volatile.
The end of Bretton Woods removed the external discipline that had constrained domestic monetary policy. Under the old system, a country running excessive deficits would lose gold reserves, forcing it to tighten. Without that constraint, the temptation to inflate became harder to resist — particularly for governments facing rising social spending, an expensive war in Vietnam, and electorates accustomed to full employment.
Then came the oil shocks. In October 1973, the Organization of Arab Petroleum Exporting Countries imposed an embargo on nations that had supported Israel in the Yom Kippur War. Oil prices quadrupled in a matter of months, from roughly three dollars to twelve dollars per barrel. A second shock followed in 1979, when the Iranian Revolution disrupted supply and prices doubled again.
The oil shocks were supply shocks — increases in the cost of a fundamental input that simultaneously raised prices and reduced output. Keynesian economics, built around demand management, had no good tools for this. Stimulating demand would worsen inflation. Restricting demand would worsen unemployment. Policymakers were trapped. The comfortable Phillips Curve trade-off had vanished, replaced by a dilemma with no acceptable solution.
The shocks also redistributed wealth on a massive scale, transferring billions from oil-importing nations to OPEC producers. Petrodollars flowed back into Western banks, which recycled them as loans to developing countries — creating the debt overhang that would explode into the Latin American debt crisis of the 1980s. The ripple effects of the oil shocks would take more than a decade to work through the global economy.
The intellectual groundwork for the Keynesian collapse had been laid before the crisis arrived. Milton Friedman, in his 1968 presidential address to the American Economic Association, had argued that the Phillips Curve trade-off was an illusion — or rather, that it was only temporary. In the short run, an unexpected increase in inflation could reduce unemployment by fooling workers into accepting jobs at wages they thought were higher in real terms than they actually were. But once workers caught on and adjusted their expectations, unemployment would return to its “natural rate,” and the economy would be left with higher inflation and no employment gain.
Friedman’s natural rate hypothesis implied that there was no permanent trade-off to exploit. Governments that tried to hold unemployment below its natural rate through sustained demand stimulus would generate only accelerating inflation. The prescription was clear: monetary policy should focus on controlling the money supply and keeping inflation stable. Employment would find its own level. This was monetarism — the doctrine that the quantity of money was the primary determinant of nominal income and that central banks should follow steady, predictable rules rather than engaging in activist fine-tuning.
Robert Lucas pushed the argument further. His 1976 critique — simply called “the Lucas critique” — struck at the methodological foundations of Keynesian policymaking. The large-scale econometric models that governments used to forecast the effects of policy changes, Lucas argued, were built on behavioral relationships estimated from historical data. But when policy changed, people’s behavior would change in response. The models assumed stable relationships that policy interventions themselves would destabilize. You could not reliably use a model calibrated under one policy regime to predict outcomes under a different regime.
Behind the Lucas critique lay the hypothesis of rational expectations: the idea that economic agents, on average, use all available information to form expectations about the future, and do not make systematic, exploitable errors. If expectations are rational, then only unexpected policy changes can have real effects. Anticipated monetary expansion will be immediately absorbed into higher prices and wages, leaving output and employment unchanged.
Rational expectations was a devastating weapon against Keynesian activism. If people could see through the government’s stimulus plans and adjust their behavior accordingly, then demand management was not merely ineffective in the long run — it was ineffective even in the short run, except when it surprised people. The policy implication was radical: governments should commit to transparent, predictable rules and stop trying to fine-tune the economy.
The intellectual upheaval of the era was symbolized by the 1974 Nobel Memorial Prize in Economics, awarded jointly to Friedrich Hayek and Gunnar Myrdal — two economists who disagreed about virtually everything. Hayek, the Austrian free-market champion who had debated Keynes in the 1930s, had spent decades in the intellectual wilderness. Myrdal, the Swedish social democrat, had championed planning and the welfare state. The joint award was read by many as the Nobel committee’s acknowledgment that the profession was deeply divided and that the old Keynesian certainties were dissolving.
Hayek’s vindication was not merely personal. The Austrian perspective — that government intervention distorts price signals, that inflation is always a monetary phenomenon, that the business cycle reflects malinvestment caused by artificially cheap credit — was suddenly relevant again. Stagflation looked like exactly the kind of problem the Austrians had predicted: the inevitable hangover from years of inflationary policy.
Theory met practice in October 1979, when Paul Volcker, the newly appointed chairman of the Federal Reserve, announced that the Fed would henceforth target the money supply rather than interest rates. The immediate consequence was an extraordinary spike in interest rates — the federal funds rate exceeded 20 percent in June 1981. The economy plunged into the deepest recession since the 1930s. Unemployment hit 10.8 percent. Farmers and homebuilders and small manufacturers went bankrupt by the thousands.
But inflation broke. From a peak above 14 percent in 1980, it fell to below 4 percent by 1983. Volcker’s gamble — if it was a gamble, rather than a calculated infliction of necessary pain — succeeded in restoring the Fed’s credibility. The lesson drawn by central bankers worldwide was that inflation could be conquered, but only through a willingness to accept severe short-term costs. Gradualism had been tried and had failed. Only shock therapy worked.
The elections of Margaret Thatcher in 1979 and Ronald Reagan in 1980 marked the political translation of the intellectual revolution. Both campaigned explicitly against the postwar Keynesian consensus. Both promised to reduce the role of the state, cut taxes, deregulate markets, and restore monetary discipline. Whether their programs delivered what they promised is a story that belongs to the neoliberal era that followed. But the stagflation decade had accomplished something irreversible: it had destroyed the confidence that government could manage the economy through demand-side intervention alone. The questions that would dominate the next generation — about the proper role of central banks, the limits of fiscal policy, the trade-off between flexibility and security — were all products of the 1970s crucible. The Keynesian consensus did not die. But it was wounded deeply enough that its recovery, when it eventually came, would take a very different form.