I really can't read this book. The text does not flow like Asimov's books. It reads like something else. It is a littlke too fast paced, with too little dialogue and I think there is not enough reflection on the background and the possibilities. The basic premise has got something wrong with it. It's not tied in too well to other things.If Asimov would use any of these ideas,he would offer some explanation. Asimov also, by the way,often had some short third person narration interspersed in his books and this is totally missing. Robert Silverberg expanded a few Isaac Asimov stories into books and he did it in keeping with Asimov's style. Robert Tiedemann is no Robert Silverberg. If Asimov had been alive, I don't thinmk he would have approved of this, except if he decided not to care I give it two stars because at least this is a try. Also, I only have this book,not its predecessor.