1970s oil shocks and central banks
Two oil embargoes sent energy prices soaring and fed broad inflation across Western economies. Central banks hesitated, and price rises became entrenched in wages and expectations for years.
Inflation stayed high while growth stalled, a mix later called stagflation.
Central banks eventually raised rates sharply to break the cycle, causing deep recessions.
Lagarde's fear of 'second-round effects' is the 1970s lesson: an energy spike can spread into the wider economy if a central bank waits too long.
