Steve Keen: Marxism, Capitalism, and Economics | Lex Fridman Podcast #303

Keen walks Lex through the history of economic thought, from the physiocrats and Adam Smith to Marx, the neoclassicals, Schumpeter, Keynes, and Hyman Minsky. He argues mainstream economics uses the wrong mathematics (difference instead of differential equations), wrongly assumes equilibrium, and ignores money, credit, and private debt. A large portion explores Marx's labor theory of value, where Keen claims Marx contradicted his own theory in the Grundrisse by admitting machines (like labor) can be a source of surplus. The conversation then turns to why socialism failed (resource-constrained vs. demand-constrained economies), China's hybrid model, and finally to climate change, which Keen argues economists model so badly it threatens civilization. It closes on AI, consciousness, love, death, and advice to avoid economics degrees.

• Keen says his own discipline of economics has 'probably helped bring about the feasible termination of human civilization.'
  00:04:08
• Argues Marx contradicted himself in a Grundrisse footnote by admitting machines, like labor, can be a source of surplus value, undermining his case for revolution.
  01:03:28
• Claims we have already 'gone through the wall' with capitalism ecologically and haven't realized we smashed our skulls.
  01:21:15
• Cites economist Richard Tol's claim that losing the Gulf Stream would raise global GDP by 1.1%, calling it the worst work he's read in 50 years.
  02:06:34
• Recounts using his Minsky model in a 2005 court case, then checking the data and realizing 'holy shit we're in for a financial crisis.'
  02:43:36
• Argues a government deficit is 'a feature not a bug' of a well-functioning fiat-money economy and that surpluses caused the Great Depression.
  03:04:28
• Advises young people: 'don't do an economics degree' and study system dynamics instead.
  03:16:30
• Admits he has battled depression for years since reading neoclassical economists' work on climate change.
  03:20:10

• The physiocrats, an extinct 18th-century French school, saw the economy as a circulation system and believed all wealth came from the soil (really the Sun), calling manufacturing 'sterile.'
  00:09:23
• Modern Monetary Theory is essentially double-entry bookkeeping; money is fundamentally the liabilities of the banking sector, created when banks lend.
  00:23:25
• An emperor's solid-gold, gem-encrusted back scratcher in Beijing's Forbidden City illustrates how feudal goods are valued by utility while capitalist commodities are valued by exchange value.
  00:42:37
• Soviet shortage economies froze innovation: Keen's example is a Russian-made motorbike sold cheaply that turned out to be an unchanged copy of a 1942 BMW.
  01:15:58
• An OECD model: losing the Gulf Stream amid a 2C rise could cut Earth's wheat-suitable surface from 20% to 7%, a 'catastrophic' food collapse.
  02:05:31
• Alan Ginsberg's summary of thermodynamics: 'you can't win, you can't break even, you can't leave the game.'
  02:23:14
• US credit swung from +16% of GDP in 2006-07 to -5% in 2008-09, a 20% turnaround in aggregate demand correlating strongly with unemployment.
  02:48:18
• During the Depression, the Austrian town of Worgl issued depreciating 'stamp' money that drove unemployment to zero until the central bank sued and shut it down.
  02:50:51
• US margin debt rose from 0.5% of GDP in 1920 to 133% in 1929, then collapsed, helping cause the 1929 crash.
  02:57:38
• Keen says healthy private debt is roughly 30-70% of GDP; the US sits around 170%.
  03:00:47