Category: Paradoxes

Braess’s Paradox

In 1990, New York City closed 42nd Street in observance of Earth Day (1).

The 42nd Street is a major thoroughfare, and its closure was expected by many to be a disaster. Manhattan’s traffic is bad enough on an ordinary day: surely the closure of a major artery could only make it worse.

To everyone’s surprise, except certain mathematicians, the closure significantly improved traffic that Continue reading “Braess’s Paradox”