"This book is for students of the past, present, and future communication system. It is for people in policy, business, and civil society who want to influence change in this system and also for people who are largely unaware that what they do every day is changing this system. I examine some of the causes and consequences of innovations in the modern digital communication system. These have been at the centre of my interest in social transformation for a long time. Investigations of what has come to be known as the information society normally are conducted within disciplinary boundaries in the humanities, social sciences, or natural and physical sciences. In this book, I cross these boundaries, something I have been encouraged to do throughout my career"--Preface, p. [vii].