Asset Bubble

When an "asset class" has a period of significant value increase driven not by rational supply/demand but by some UnSustainable lever. Which leads to a significant value drop when things change. (cf Crisis)

Within economics, Reflexivity refers to the self-reinforcing effect of market sentiment, whereby rising prices attract buyers whose actions drive prices higher still until the process becomes unsustainable. This is an instance of a positive feedback loop. The same process can operate in reverse leading to a catastrophic collapse in prices.


Extraordinary Popular Delusion-s and the MadnessOfCrowds is a history of popular folly by Scottish journalist Charles Mackay, first published in 1841. The book chronicles its subjects in three parts: "National Delusions", "Peculiar Follies", and "Philosophical Delusions". Despite its journalistic and rather sensational style, the book has gathered a body of academic support as a work of considerable importance in the history of social psychology and psychopathology.

vs Wisdom Of Crowds

See Real Estate, DotCom, Commodity

Some say bubbles generate net public gain

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