John Maynard Keynes · Economics
How Keynes’s ideas remade economic policy, were overthrown by the crises of the 1970s, and came roaring back in the crash of 2008 - a verdict still unsettled.
For roughly three decades after the Second World War, Keynes ruled economic policy across the Western world. Governments accepted responsibility for managing demand to maintain full employment, using fiscal and monetary policy to smooth the business cycle. This era - the ‘post-war consensus’ - saw the longest sustained boom in the history of capitalism, with rapid growth, low unemployment, and rising living standards broadly shared. ‘We are all Keynesians now,’ even a conservative American president would say. Keynes seemed to have tamed the business cycle.
Into the breach stepped Milton Friedman and the monetarists, leading a counter-revolution. Inflation, Friedman argued, is ‘always and everywhere a monetary phenomenon’ - caused by governments expanding the money supply too fast, not by the mysterious forces Keynesians invoked. He argued that activist demand-management was destabilising: governments lacked the knowledge and the discipline to fine-tune the economy, and their interventions, hampered by lags and politics, often amplified the cycles they meant to smooth. Better, he said, to set stable rules - steady money growth - and let markets work. For a generation, this view, and the broader free-market revival it fed, displaced Keynes.
To understand the rise and fall of Keynesianism, it helps to see concretely what the ‘post-war consensus’ actually consisted of - the cluster of institutions and commitments, built across the Western democracies after 1945, that together constituted the practical reign of Keynes. At its heart was a new and historically unprecedented commitment: governments now accepted responsibility for the overall level of employment and economic activity. Before Keynes, no government considered it its job to ensure full employment; the business cycle was treated as a force of nature to be endured. After Keynes, maintaining high and stable employment became a central, openly declared goal of policy - enshrined in legislation like the U.S. Employment Act of 1946 and Britain’s wartime commitment to ‘a high and stable level of employment’ - and governments stood ready to use fiscal and monetary policy to manage aggregate demand and smooth the cycle. This was the core Keynesian inheritance: the state as active manager of the macroeconomy.
Around this commitment grew a wider settlement, the mixed economy. It combined a predominantly market economy - private property, free enterprise, the price system - with an active, demand-managing state and an expanding welfare state that provided social insurance against the risks of a market society: public pensions, unemployment insurance, health care, education. These welfare provisions were not only humane but economically Keynesian, since they functioned as powerful automatic stabilisers, cushioning demand in downturns. The international dimension was the Bretton Woods system (1944) - which Keynes himself helped design at the end of his life - a framework of fixed-but-adjustable exchange rates and new institutions (the International Monetary Fund and the World Bank) intended to provide global monetary stability and prevent the beggar-thy-neighbour currency wars and trade collapses that had deepened the Depression. Together these elements - the full-employment commitment, demand management, the welfare state, and the Bretton Woods international order - formed a coherent system, often called ‘embedded liberalism’: market capitalism embedded within a framework of social protection and active macroeconomic management. And this system presided over what came to be called the ‘golden age’ of capitalism - roughly 1945 to 1973 - the longest sustained boom in capitalist history, with rapid growth, low unemployment, and, crucially, prosperity that was broadly shared across the income distribution. Whether the Keynesian framework caused the golden age or merely coincided with it is genuinely debated (the post-war decades had many favourable conditions). But the consensus was real, it defined Western economic policy for a generation, and even after its partial overthrow, much of it - the welfare state, the commitment to managing demand, the acceptance of government responsibility for the economy - remains the implicit framework within which modern democracies still operate.
This is the opening of the lesson. The rest — the dialogue, the primary source, and the recall — is in the app.
You learned that Keynesianism rose, fell, and revived. Reconstruct why it was overthrown in the 1970s and why it returned in 2008, in your own words.
Leads to Milton Friedman.
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