What Happened
On October 17, 1973, Arab OPEC members announced an oil embargo against the US and other Western nations that had supported Israel in the Yom Kippur War. Oil prices quadrupled from $3 to $12 per barrel within months. A second oil shock followed in 1979 when the Iranian Revolution disrupted supply.
The result was stagflation — high inflation combined with high unemployment — which the dominant Keynesian economic framework said was impossible. The Phillips Curve trade-off between inflation and unemployment broke down. The supply shock created inflation that demand management could not address without causing unemployment.
Nixon imposed price controls which created shortages. Ford launched the WIN (Whip Inflation Now) voluntary program which did nothing. Carter appointed Paul Volcker as Fed Chairman in 1979. Volcker raised the Fed funds rate to 20%, crushed inflation, and caused the deepest recession since the Great Depression. Unemployment hit 10.8%. By 1983 inflation was tamed and a 25-year expansion began.
The Mechanism
Supply shock stagflation — the limits of demand managementKeynesian demand management assumes that inflation is caused by excess demand. The solution is to reduce demand through higher taxes, spending cuts, or higher rates. But supply shocks — where prices rise because supply is constrained, not because demand is excessive — cannot be addressed by demand management. Reducing demand to fight oil-shock inflation produces unemployment without reducing inflation. The only cure is a shock large enough to break inflationary expectations completely, accepting the recession as the cost.
What the Consensus Believed
The prevailing view before the reckoning
The Phillips Curve was a stable trade-off between inflation and unemployment. Government could choose any combination of the two. Supply shocks were temporary and manageable. Price controls could prevent cost-push inflation from becoming embedded. The oil shock was a one-time event, not a systemic problem.
What the Record Shows
Supply shocks require supply-side responses
Rate hikes cannot fix supply constraints. They can prevent second-round effects if expectations are not yet unanchored, but if they are, you need a Volcker shock.
Inflation expectations become self-fulfilling
Once workers and businesses expect inflation, they demand higher wages and raise prices pre-emptively. This makes inflation self-sustaining even after the original supply shock passes.
Political interference lengthens crises
Nixon's price controls, Ford's WIN campaign, and Carter's accommodative policy all delayed the necessary medicine. Volcker could not have succeeded without Reagan's political backing for the recession.
Oil is geopolitical as much as economic
The 1973 embargo was a political weapon. OPEC proved that commodity producers could weaponize supply. The petrodollar system that followed was a direct response — tying oil to dollar settlement to align OPEC interests with dollar stability.
↑ Cognitive pattern: Model Worship — Phillips Curve orthodoxy versus supply shock reality
Key Voices
Called It Right
Milton Friedman
University of Chicago
“Stagflation proves Keynesian economics is wrong. Inflation is always and everywhere a monetary phenomenon and the Phillips Curve is not a stable policy trade-off.”
1975 Vindicated
Paul Volcker
Federal Reserve
“Inflation is a thief. If we do not break the back of inflation now the cost will be much higher later. I will raise rates as high as needed.”
October 1979 Right — succeeded at great cost
Wrong
Gerald Ford
US President
“WIN — Whip Inflation Now. Voluntary restraint by consumers and businesses will bring inflation down without recession.”
October 1974 Failed — inflation persisted
Nixon Administration
Price controls
“Price controls will prevent cost-push inflation from becoming embedded. We can hold prices while addressing supply shortages.”
August 1971 Created shortages not price stability
Keynesian economists
Academic consensus
“The Phillips Curve is a stable trade-off. We can choose our preferred combination of inflation and unemployment through demand management.”
1970–1974 Wrong — stagflation disproved it