Synthesized answer
The provided passages do not detail specific evidence the author provides. However, they do indicate that Ray Kurzweil has been an advocate of technology's role in the future for over three decades [1]. His earlier work, *The Age of Spiritual Machines*, argued that computers would soon match human intelligence [1].
The passages describe his current examination of the "next step" in this evolutionary process, which he posits is the union of humans and machines [1]. This union would involve combining human knowledge and skills with the superior capacity, speed, and knowledge-sharing abilities of artificial creations [1]. The passages do not elaborate on the evidence used to support these claims.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The Singularity Is Near by Ray Kurzweil Description: For over three decades, Ray Kurzweil has been one of the most respected and provocative advocates of the role of technology in our future. In his classic The Age of Spiritual Machines, he argued that computers would soon rival the full range of human intelligence at its best. Now he examines the next step in this inexorable evolutionary process: the union of human and machine, in which the knowledge and skills embedded in our brains will be combined with the vastly greater capacity, speed, and knowledge-sharing ability of our…