DeSimone's Folly

In the course of human events, there have been many missteps in pursuance of wealth and glory. However, none is more comical than on December 22nd, 2017 (Yen Day), when Raymond DeSimone made a bold move at the currency exchange. He exchanged five US dollars for yen certain that he would automatically make money back. In reality the value of the yen dramatically decreased soon after this transaction and this event is referred to as DeSimone’s Folly.

You haven't heard about DeSimone's Folly from 2017?