Speaker for the Dead

When I started reading this book, I was prepared to simply tolerate it - as one piece of the series that so many people have enjoyed. I've read many of the books in the series, and haven't appreciated them very much, but this book contains the type of speculation that I consider fundamental to good science fiction. What If we encounter other types of life that are not only alien in psychology, and biology, but basic understandings of life? What If the very existence of one biosphere has the possibility for contaminating and destroying every biosphere it comes in contact with? What If . . . well, I may have already said too much. Enjoy the book. I hope it makes you think.