Instruct: Classify Amazon reviews into positive or negative sentiment
Query: And They Took It to Their Graves - 2 1/2 Stars

I'd like to be able to give half star ratings on some of this stuff. 2 1/2 for this one. The title and premise of this book is that the witness and insider accounts of the early days of the flying saucer phenomenon accounted for these fellows disappearing and/or going belly up. And I don't doubt that in some instances that might have been true. I found the book interesting enough to buy because it was such an early account of the phenomenon and as such important because the information was still fresh and strategies for disinformation were still evolving. However, if "they knew too much" then they took it to their graves, because the author is unable to relate anything here that would have gotten anyone killed - let alone pestered. Slightly interesting because of its vintage, but if you want to read about the early days then read Donald Keyhoe, Edward Ruppelt, J. Allen Hynek, etc.