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Author Diana Henriques wrote A First-Class Catastrophe: The Road to Black Monday, the Worst Day in Wall Street History. She tells John how today’s market pitfalls derive from a 500 point drop to the Dow in 1987, and how circuit breakers came to be.

[audio http://serve.castfire.com/audio/3403131/3403131_2017-09-25-163831.64kmono.mp3?ad_params=zones%3DPreroll%7Cstation_id%3D3759.mp3]