This was difficult to read for two reasons. One, its unnecessarily written like a text book or technical document. Two, if you are an analyst and have been for a number of years, this book is dated. Meaning, all the "revolutionary" thoughts on intelligence in the book have already been accomplished; and not in any way how the author thought they would. It took me a very ling time to read this one. I found in later chapters the author reaffirming earlier points, to a fault. If you are interested in intelligence books, check out others I have reviewed on my bookshelves. I would not recommend this. The only reason this book would be needed is if you viewed the contents and wanted to learn more about a specific chapter or part of the contents. Reading this whole book is silly, because its not even relevant. I think it was in the late 90s and early 2000s, but the author is so far off the mark is laughable. A final thought, the points the author makes are simple conclusions intelligence would have made anyway through practice and trail and error. The idea we need a native culture expert is presented as revolutionary, really thats just common sense.