Expert whistleblowers are surprisingly bad at stopping Ponzi schemes compared to just general bad news about the economy.
March 19, 2026
Original Paper
Rephrasing Illusions: an Agent-based model of Madoff 's Ponzi scheme
SSRN · 6437018
The Takeaway
Using agent-based modeling of the Madoff scandal, researchers found that even highly convincing experts who prove a fraud is happening fail to trigger a collapse because social trust is remarkably sticky. Instead, Ponzi schemes usually only fail when broad, negative economic news triggers a spontaneous and uncoordinated withdrawal of funds by the general public.
From the abstract
In light of the Madoff case, we present an Agent-Based Model of a Ponzi scheme. Agents are initially inclined to invest in the scam because they believe the wealth will increase, even if the fraudster dissipates it without any investment. We stress that the main characteristic of such schemes is the growing discrepancy between the perceived wealth and the actual total amount of money in the impostor's possession. The tendency gradually reverses and more agents withdraw their wealth (and made-up