Lists: more sci-fi, more criticism.

More in comparison to his other works, I mean. (Which are silent - do not get me wrong -. Amazing)
About the sci-fi: there are trips to Mercury, Mars, and Titan (one of Saturn's moons). There are plans of an interstellar attack, all run by one man, leading a totalitarian society on Mars by controlling the people who live there with pain-creating antennas implanted in everyone's head. There is time travel, to a certain extent. There are almost-human robots. And this (as Mentioned by other critics) is one of the reasons I think this book has not been appreciated to its full value. People make a relation between 'extreme sci-fi' and 'lame'. I have made this relation before; this book forced me to bite my tongue. The sci-fi feel of this book only makes it more interesting, in the sense That Becomes more possible, and the Meaning of Life - Which is developed Often in this book - can be spoken of by many different points of view.
Now, about the criticism of humanity: even though Vonnegut is well-known for his criticism and mockery of the human race, never - in any other book - has it been so direct or cruelly honest. You can not help but appreciate the wryness with Which he says everything he has to say about us. The banality for reason and meaning of human life in this book is, ironically, Depicted in a hiralious and inventive fashion.
This book Demonstrates - as much as, and maybe more than that, his other books - that Vonnegut is the cleverest, most perceptive author out there.
Kudos, Kurt, on a book thatwill never be read for the last time.