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About this quote

What does it mean?
Historically, people have been deceived by others, but the Great Depression marked a shift where humanity collectively deceived itself through speculative bubbles.
In plain terms
People used to get tricked by others, but sometimes they trick themselves on a huge scale.
What can you take from it?
Collective self-deception can cause massive economic crashes.

Where it applies

  • market crashes
  • investment bubbles
  • economic downturns

Putting it to work

  • monitor collective sentiment
  • question market hype

Questions to consider

  • When did you last fool yourself?
  • Can you trust a rising market?

Another view

External manipulation still plays a role in financial disasters.

More from John Kenneth Galbraith

  1. In the autumn of 1929 the mightiest of Americans were, for a brief time, revealed as human beings.

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  2. You roll back the stones, and you find slithering things. That is the world of Richard Nixon.

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  3. But now, as throughout history, financial capacity and political perspicacity are inversely correlated.

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