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TABLE OF CONTENTS

Class I Impossibilities
1. Force Fields
2. Invisibility
3. Phasers and Death Stars
4. Teleportation
5. Telepathy
6. Psychokinesis
7. Robots
8. Extraterrestrials and UFOs
9. Starships
10. Antimatter and Anti-universes

Class II Impossibilities
11. Faster Than Light
12. Time Travel
13. Parallel Universes

Class III Impossibilities
14. Perpetual Motion Machines
15. Precognition
Epilogue: The Future of the Impossible

There were a few new physics facts and concepts I picked up while reading this, but mostly it summarizes things that are explored in more depth elsewhere (For example, Brian Greene's books). I felt the lightweight rehash of relativity, quantum physics, and cosmology was unnecessary.

What Kaku does do, that is original and I found interesting, is to organize it all around concepts that frequently appear in science fiction. I especially appreciated the section on starships, in which he evaluates and compares various methods of space propulsion which I have often read about, as well as assess how far each concept is from practical use. I found this book to be a more successful companion to science fiction and to speculative engineering, than to physics.