Let's start with this short story about Ed Kleinman. Notice that the story is 5 years old, but I'm using it for two reasons. First, Ed's clients love him and even though he stopped working for Dave Kurlan a few months ago, his clients still find him. Second, he knows his stuff cold! He doesn't need the book. He is the book. He not only can quote the book, but he can tell you the page that the quote is on and he can show you how to do it and tweak you so that you can do it right.