Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sub-par for Heinlein......

I'm a HUGE fan of Heinlein's, but the quality of this book is far below his other works in my opinion. It seems like the story couldn't decide what it wanted to be about, first genetic engineering, then an armed society, then telepathy! Just when I'd start getting interested in one character, the focus of the book would shift to another, loose ends were rarely tied up. It's just a jumble of ideas that should have been re-written more coherently. If you're a die-hard Heinlein fan, and I am, I'd still reccomend reading it, but if you're not, don't judge the rest of Heinlein's work based solely on this book.