When I wrote a first draft of the book, I circulated it to a number of colleagues for comments, and here are some of the reactions that I got: "Better get a security camera for your house."
当我写了书的初稿时， 我分发给一些同事征求意见， 这里是我得到的 一些反应： “最好给你的房子装个保安摄像头。”