Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Very Impressive Read

I read this book over two days. It's definitely a page-turner in the same league as The Andromeda Strain or Jurassic Park. But best of all, it gets down to the science of "science fiction" in ways I think some of his other novels (Disclosure, The Lost World) seem to have neglected. While it's not "hard science fiction" (e.g., the sample computer code in the novel doesn't even make an attempt at looking like a recognizable programming language), it has enough scientific detail to keep the SF fan interested. The characters are also surprisingly well-thought-out, especially for a Crichton novel (where the characters are normally not nearly as important as the concepts). All in all, I would recommend this book to SF fans who were interested in a good read, or any reader who is interested in being introduced to Crichton's writing.