Extraordinary Popular Delusions and the Madness of Crowds is an early study of crowd psychology by Scottish journalist Charles Mackay, first published in 1841 under the title Memoirs of Extraordinary Popular Delusions. The book was published in three volumes: “National Delusions”, “Peculiar Follies,” and “Philosophical Delusions.”The first three chapters address economic events to include:The Mississippi SchemeThe South Sea BubbleThe Tulip ManiaThe remaining chapters describe mania that are essentially non-economic, including the witchcraft phenomenon. All chapters describe how crowds periodically lose their common sense.Were Mackay alive, he would probably recognize today’s trade war and the tariffs enacted by President Trump as being nothing more than the madness of crowds. Specifically,
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