O’Reilly Says: The failure of many technical manuals is that they simply describe the subject. Many fail even in that. But even if they succeed, that’s only half the job. What we try to do in our books is to do some of the thinking for the reader, just as you would if you were talking one-on-one with someone, trying to explain what she really needs to know about the subject in order to get her job done.
Secretly Ironic 