_The Age of Unreason_ isn't about predicting the future, it's about training yourself to look at the future in ways that you might otherwise not have done. As such, I found it a valuable and interesting book which is clearly based in a lot of meditation on learning and learning theories.
Some of the things Handy mentioned turned out to have become true since the book was written. Other things didn't-- but it doesn't matter ultimately. What the book asks is this: Can you recognize the real causes for pain that you identify? Can you think differently to force discontinuous change? Is your vision of the future based on an accurate perception of the past, or are you looking past major factors because you don't recognize the role of gradual change?
People who like this book may like some of the books on developing strategies using scenario exercises. This book also contains a decent (if dated) bibliography.
If you are a well educated, thoughtful, reasonably creative person who has some insight into your life, you will read this book and say, "everything in this book is obvious." If you are a person who has difficulty thinking things through, you probably would find this of value.
I know MOST people seem to find this book of some value. I am probably in the minority. If you are trying to decide whether to buy this book, you might ask this question: when you read the book, "7 habits of highly effective people," did you think
A: I know everything in this book already and I can't believe there is anyone out there who doesn't
or
B: Wow this is a great book and I learned a lot from this book.
If you answered A, then you will find this book to be a waste of money.