A book that is full of interesting ideas and predictions about the next 50 years, particularly those about why we should expect
Moore's law to hold true for a while longer, and where it will take us.
However it contains a lot of padding. Mr. Kurzweil has wonderful ideas, but he is not much of a writer.
He also suggests that "things are going to get crazy, fast". This syndrome has been part of predictions of the future for several thousand years (For e.g., the early Christians believed that the world was going to end soon).
The best wisdom on this subject is still this: we overestimate change in the short term, and underestimate it in the long term.