本想买来看看，结果amazon上只有三个留言，而且两个一星一个五星：
1）4 of 4 people found the following review helpful：
This book neither sheds any light on how the CIA operates, nor on anything that anyone who works in business already knows. It is a disappointing comparison which fails to provide any value. You are better off spending your money elsewhere. （一星）
2）3 of 3 people found the following review helpful：
Like SO many American non-fiction books, this would have made an interesting magazine article. It does not contain enough material to be a book, and is therefore 80% filler and nothingness. Shame.（一星）
3）0 of 1 people found the following review helpful：
Well worth reading. Its amazing how many things you can or already use in day to day working life. the book is well written and very informative.（五星）
所以先不论具体内容，只是对比下豆瓣和amazon的评价，仁者见仁智者见智。