That is called a fallacy of composition, where rational actions at an individual level become dangerous and destructive in ...

The systematic investment plans (SIP) of mutual funds offer a path to stock ownership that’s good for individuals. Collectively, however, surging inflows had the bad effect of causing stock-price ...

In “Obama and the ‘Fallacy of Composition’” (op-ed, Feb. 5), William A. Kelly Jr. and Elizabeth Sawyer Kelly contend that free community-college education is a waste of scarce resources and will leave ...