Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Heinlein Heir?

I agree with critics who have compared this book to some of Heinlein's work--it has the same sketchy, ridiculous plotting and totally unbelievable characters as Heinlein's later work. What it doesn't have is any of Heinlein's fascinating, provocative ideas or his genuine wit. In spite of their many flaws, Heinlein's books somehow work; this one doesn't. It reads like a first draft of a so-so idea that wasn't plotted or outlined beforehand: classic sloppy writing. And incidentally, I'm tired of authors writing brilliant "child" characters that are really just little adults. A child can be convincingly brilliant--Orson Scott Card anyone? But the outlook of Robinson's child character here is that of a little adult, and not a very smart one at that.