The paper addresses the issue of “fake news” through a well-known and widely studied experiment that illustrates possible uses of economics and game theory for understanding the phenomenon. Public news is viewed as an aggregation of decentralized pieces of valuable information about complex...

In the experiment, subjects have tables at their disposal that indicate the expected future dividend stream, which corresponds to the fundamental value, at any time. Subjects take a quiz on how to read the table before the market opens. Thus the fundamental value of the asset is common knowledge...