Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Save your money!

The only reason why I didn't return it was that I had already read fifty pages and my wife wouldn't let me return a "used" book. Honestly, I haven't read a sillier story in I don't know how long. As one of the reviewers implied, this is veeeeery juvenile fiction that, unlike Heinlein's, is NOT suitable for anyone over age 12 or so. It really belongs in the obscurity of really bad pulf scifi and I have no idea why Eric Flint rescued it when there are so many better scifi authors/stories unknown to today's readers.IF you allow yourself to be fooled by the other two reviews AND you buy this book, DON'T allow your spouse/significan other to talk you out of getting your money back. And don't say that I didn't warn you!