Ray Kurzweilis the inventor of the most innovative and compelling technology of our era, an international authority on artificial intelligence, and one of our greatest living visionaries. Now he offers a framework for envisioning the twenty-first century--an age in which the marriage of human sensitivity and artificial intelligence fundamentally alters and improves the way we live. Kurzweil's prophetic blueprint for the future takes us through the advances that inexorably result in computers exceeding the memory capacity and computational ability of the human brain by the year 2020 (with human-level capabilities not far behind); in relationships with automated personalities who will be our teachers, companions, and lovers; and in information fed straight into our brains along direct neural pathways. Optimistic and challenging, thought-provoking and engaging,The Age of Spiritual Machinesis the ultimate guide on our road into the next century.A Note to the Reader Acknowledgments Prologue: An Inexorable Emergence Before the next century is over, human beings will no longer be the most intelligent or capable type of entity on the planet. Actually, let me take that back. The truth of that last statement depends on how we definehuman. Part One: Probing the Past Chapter One: The Law of Time and Chaos For the past forty years, in accordance with Moore's Law, the power of transistor-based computing has been growing exponentially. But by the year 2020, transistor features will be just a few atoms thick, and Moore's Law will have run its course. What then? To answer this critical question, we need to understand the exponential nature of time. Chapter Two: The Intelligence of Evolution Can an intelligence create another intelligence more intelligent than itself? Are we more intelligent than the evolutionary process that created us? In turn, will the intelligence that we are creating come to exceed tlÅ