Extraordinary Popular Delusions and the Madness of Crowds book club questions

1. 1.

   Mackay wrote about three financial manias and implied the pattern was clearly recognizable. Why do you think the same pattern recurs in financial markets despite widespread awareness of the history?

2. 2.

   Which elements of the tulip mania, South Sea Bubble, or Mississippi scheme do you see reflected in financial markets or technologies today?

3. 3.

   Mackay published in 1841. What does the continued relevance of a 180-year-old book suggest about whether human behavior in crowds changes?

4. 4.

   The book argues that intelligent people are not protected from manias. What makes collective irrationality so hard to resist even when you recognize it?

5. 5.

   How do you distinguish between a genuine new opportunity that early participants are right to value highly and a mania that will collapse?

6. 6.

   The financial chapters are considered much more valuable than the rest of the book. What does that suggest about why certain historical examples stick in a culture's memory and others don't?

7. 7.

   Mackay has been criticized for inaccuracy on some specific historical claims. Does that reduce the value of the book's core argument, or is the argument separable from the historical details?

8. 8.

   The Mississippi scheme required government participation to reach the scale it did. What contemporary analogies to that dynamic — speculative assets endorsed or enabled by government action — can you identify?

9. 9.

   What psychological conditions are necessary for a mania to get started? Which of those conditions are currently present in any market you're watching?

10. 10.

    Mackay assumes individual irrationality is largely tamed by solitude and group irrationality is the problem. Do you think that's right, or does individual irrationality feed into collective manias in ways he underweights?

11. 11.

    If a close friend told you they were heavily invested in something that had the structural features of a mania, what would you say?

How to run the discussion

• Pick six to eight, not all of them. An hour of real discussion covers fewer questions than anyone expects, and racing the list is what makes a book club feel like homework.
• Open with what people noticed, not what they concluded. Asking for a verdict first hardens opinions before anyone has heard each other.
• Let the disagreement run. The questions below that split a room are the ones worth the time; the ones everyone answers the same way can be skipped.
• Ask the quiet person a specific question. A direct, narrow question is far easier to answer than an open invitation to contribute.