Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What could this have been?

What could this have been had RAH been well enough to edit and rewrite it? As most fans know, Heinlein suffered periods of sickness. I think this time it was peritonitis, but I am not really sure. He did not get to edit or rewrite to his standards, and it shows. What you are reading is one of his rough drafts, not a finished product. That makes a big difference, and for that reason, I can't really recommend this except to die-hards. However I am surprised at the number of people who are not die-hards who seem to enjoy it. I would just hate for this to be someone's first or second experience with this wonderful author. May I suggest Citizen of the Galaxy? Time Enough for Love? Even To Sail Beyond the Sunset? This should be one of the last books Heinlein competists like myself should read.