Chapter 1 of Information Rules begins with a description of the change brought on by technology at the close of the century--but the century described is not this one, it's the late 1800s. One hundred years ago, it was an emerging telephone and electrical network that was transforming business. Today it's the Internet. The point? While the circumstances of a particular era may be unique, the underlying principles that describe the exchange of goods in a free-market economy are the same. And the authors, Carl Shapiro and Hal Varian, should know. Shapiro is Professor of Business Strategy at the Haas School of Business at UC Berkeley and has also served as chief economist at the Antitrust Division of the Justice Department. Varian is the Dean of the School of Information Management and Systems at UC Berkeley. Together they offer a deep knowledge of how economic systems work coupled with first-hand experience of today's network economy.