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Extraordinary Popular Delusions and the Madness of Crowds & Confusión de Confusiones (Wiley Investment Classics)

by Charles Mackay, Joseph De La Vega

ISBN 0471133094 / 9780471133094 / 0-471-13309-4
Publisher Wiley
Language English
Edition Hardcover
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Book summary

Why do otherwise intelligent individuals form seething masses of idiocy when they engage in collective action? Why do financially sensible people jump lemming-like into harebrained speculative frenzies -- only to jump broker-like out of windows when their fantasies dissolve? We may think that the Great Crash of 1929, junk bonds of the '80s, and overvalued high-tech stocks of the '90s are peculiarly 20th century aberrations, but the excerpts of these two classics--first published in 1841 and 1688, respectively--show that the madness and confusion of crowds knows no limits, and has no temporal bounds. These are extraordinarily illuminating and, unfortunately, entertaining tales of chicanery, greed, and naivete. Essential reading for any student of human nature or the transmission of ideas.

In fact, cases such as Tulipomania in 1624--when tulip bulbs traded at a higher price than gold--suggest the existence of what I would dub "Mackay's Law of Mass Action": when it comes to the effect of social behavior on the intelligence of individuals, 1+1 is often considerably less than 1, and sometimes less than 0. [via]