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Quantitative Autopsy of the 1929 Crash: When 10x Leverage Met 4-Hour Latency

Rebuilding the 1929 crash in spreadsheets reveals a mass liquidation event disturbingly similar to modern flash crashes. From 10% margin's negative convexity to Stock Pool manipulation, 4-hour ticker tape delays, and failed rescue operations — the primitive algorithms of a century ago share the same DNA as today's 0DTE gamma squeezes.