Great Depression

The Great Depression was a global economic crisis from 1929 to 1939, marked by massive unemployment, bank failures, and GDP contractions, originating in the U.S. stock market crash and spreading worldwide. It reshaped economies, governments, and societies, prompting interventions like the New Deal and influencing modern monetary policy.

Competing Hypotheses

Inequality Starved Demand [alternative] (score: 2.8) — 1920s productivity gains (electrification) flowed to top 1% (24% income share peak 1928), stagnating wages and causing overcapacity/underconsumption, crash exposing demand shortfall despite low rates.
New Deal Cartels Blocked Recovery [alternative] (score: 7.8) — FDR's National Industrial Recovery Act and Agricultural Adjustment Act created industry cartels enforcing high wages/prices 25% above market, suppressing competition and investment, prolonging unemployment to 17% by 1936 and causing 1937-38 recession.
Taxes Caused Elite Capital Flight [alternative] (score: 3.5) — Hoover's 1932 Revenue Act tax hikes to 65% marginal rates (FDR later 95%) incentivized wealthy elites to hoard cash abroad, shut businesses, and trigger investment/job losses, deepening contraction despite early recovery signs.
Fed Credit Boom Led to Bust [alternative] (score: 19.3) — Federal Reserve's 1920s easy money policy (low rates, excess reserves) created artificial boom and malinvestments in stocks/real estate; inevitable 1929 correction became depression due to Hoover/FDR interventions blocking liquidation via wage/price controls and cartels.
Gold Standard Forced Deflation [alternative] (score: 13.0) — Post-WWI overvalued dollar/gold parities caused chronic deflation; France's 20% world gold hoarding (1928-1931) tightened global liquidity, transmitting U.S. crash shocks worldwide until devaluations allowed expansion.
Bankers Engineered Bank Consolidation [alternative] (score: 7.8) — Banker-dominated Federal Reserve (post-1913 Jekyll Island structure) fueled 1920s credit bubble then deliberately tightened policy post-crash, allowing 9,000+ small banks to fail while large banks survived/absorbed them, consolidating control/profits.
Stock Crash and Policy Errors [official] (score: 21.9) — The 1929 stock market crash from speculation and margin buying triggered bank runs and contraction; Federal Reserve inaction shrank money supply, debt deflation spiraled, demand collapsed, and policies like Smoot-Hawley tariffs cut global trade, amplifying into decade-long depression until devaluations and spending.
Debt Bubble Triggered Deleveraging [alternative] (score: 18.7) — 1920s private debt buildup (non-financial $140B, household debt/income doubled, margin loans $8.5B, Florida land 300% debt/GDP) forced mass deleveraging post-crash, evaporating credit/demand in Fisher-style spiral paralleling 2008.
Crash Enabled Elite Infrastructure Grabs [alternative] (score: 3.0) — Crash-generated unemployment provided cheap/slave-like labor for Hoover/FDR mega-projects (e.g., Hoover Dam, roads), allowing bankers/contractors to buy assets low and profit from public works contracts.
Mundane Incompetence/Coincidence [null] (score: 21.9) — Young Fed's decentralized structure, info lags, real bills doctrine, policy trial-error (Smoot-Hawley logrolling, Hoover voluntarism), speculation/overproduction, Dust Bowl caused spirals without plots or hidden motives.

Evidence Indicators (13)

Dow fell 89% 1929-1932
Fed M1 shrank 27-35% post-crash
Top 1% income 24% share 1928
Fed rate cut 7% (1920) to 3.5% (1928)
France hoarded 20% world gold 1928-31
9,000+ bank failures by 1933, small banks disproportional
NIRA/AAA raised prices/wages 25% above market
Margin loans $8.5B called post-crash
Business failures/job losses spiked post-1932 tax hikes
Supreme Court struck NIRA 1935 (Schechter)
1920-21 quick recovery sans intervention
No direct docs of Fed conspiracy intent
No whistleblowers on plots over 90+ years

Behavioral Indicators (6)

Fed inaction deviated from 1907 precedent
Jekyll Island figures dominated Fed board
Business failures spiked post-1932 tax hikes
Small banks failed, big banks gained share
NIRA/AAA enforced high wages/prices in slump
Hoover Dam built at peak 25% unemployment

Intelligence Report

Executive Summary The Great Depression, spanning 1929 to 1939 in the U.S. with global ripples into the 1940s, saw U.S. GDP plummet 30%, unemployment hit 25%, and over 9,000 banks fail, wiping out billions in deposits. Official accounts blame a stock market crash fueled by speculation, amplified by Federal Reserve inaction that shrank the money supply, debt spirals, collapsed demand, and policy missteps like tariffs. Alternatives range from Fed-engineered credit booms and gold standard rigidities to New Deal interventions prolonging agony, debt bubbles, inequality, taxes, conspiracies, or plain incompetence. After sifting evidence from Fed records, NBER data, congressional testimonies, and economic histories—then subjecting top theories to brutal adversarial attacks—the evidence most solidly backs three contenders labeled Very Strong: the official "Stock Crash and Policy Errors," the Austrian "Fed Credit Boom Led to Bust," and the baseline "Mundane Incompetence/Coincidence." The official narrative edges out slightly due to broadest documentation from independent sources like court records and League of Nations reports, but red-teaming exposes its reliance on self-serving Fed data and overlooked alternatives like rapid 1920-21 recovery without intervention. The Austrian view holds up well as a challenger but falters on unproven "malinvestments." This tie reflects genuine complexity—no single smoking gun—rather than shaky analysis. Debt bubbles and gold constraints earn Strong and Moderate support, respectively, while conspiracies and underconsumption crumble to Poor or Weak. Hypotheses Examined Inequality Starved Demand This theory claims 1920s productivity surges from electrification funneled income to the top 1% (peaking at 24% share in 1928 per IRS data extended by Piketty and Saez), leaving wages stagnant, demand weak, factories overbuilt, and the crash exposing chronic underconsumption despite low interest rates. Promoted by economists like Piketty, Saez,...