“Traditionally, the profession of engineering has been organized by the physical things that we can build. Civil engineers build bridges; mechanical engineers build jet engines; electrical engineers build computers and electric generators. Another way to organize the profession would be with respect to what we want to accomplish. Then we would have titles such as transportation engineer; energy engineer and (the subject of this book) information engineer. Such a person would understand first, what information is and how to make it useful to people by transforming it, storing it, transmitting it. The purpose of this book is to give an introduction to this broad field.”