This was a fascinating book that explored a topic very few others have. As a psychologist, for many years I've been aware of research that indicates people may not always be "unconscious" when in a coma, but on the contrary there may be a lot else going on that they can later remember. This book dovetailed with that research. I gave it to my children to reach so they will know how to possibly communicate with me if I'm ever in an extended coma.