There are a lot of books which deal with the aftermath of a nuclear conflict. This offers a very original approach. Ancestors of the survivors have been living underground and their light source has failed. They have had to develop their hearing skills to cope with their sight deprivation. A fascinating study of what the world would be like. I am a blind person and I often thought that I "saw" the world like a sighted person in the dark, but this isn't actually true. There has been a lot of experimenation looking at how people perceive the world, and I just imagine the world differently. I have found that I can make more of my other senses because I have to. Can you tell what make a car is from the sound of the engine? I can. This writer captures the difference. I believe him. Added to this he tells a good story along the lines of " I want to know what happens next". The work is a lovely construct, well written and captivating. If you want to experience a different world - read it.