Synthesized answer
The provided passages do not explicitly list unanswered questions. However, they describe a future where the distinction between humans and computers blurs [Passage 1, Passage 2]. This blurring suggests a potential for machines to claim consciousness and for humans to believe them [Passage 1].
The passages also predict that computers will exceed the memory capacity and computational ability of the human brain by 2020, with human-level capabilities following soon after [Passage 2]. They foresee relationships with automated personalities and information being fed directly into brains via neural pathways [Passage 2]. While these predictions outline a transformed future, they do not detail any specific questions that remain unanswered.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
eural pathways. Eventually, the distinction between humans and computers will have become sufficiently blurred that when the machines claim to be conscious, we will believe them. - Back cover.
Title: The age of spiritual machines by Ray Kurzweil Description: Imagine a world where the difference between man and machine blurs, where the line between humanity and technology fades, and where the soul and the silicon chip unite. This is not science fiction. This is the twenty-first century according to Ray Kurzweil, the inventor of the most innovative and compelling technology of our era. In his inspired hands, life in the new millennium no longer seems daunting. Instead, it promises to be an age in which the marriage of human sensitivity and artificial intelligence fundamentally…