None of the things I have mentioned can make a foolish man wise or a bad book good. But when they are properly used they remind us that the act of reading is an act of confidence, and almost of conspiracy, between one human being and another. That conspiracy can get nowhere, and that confidence can be betrayed. But if all goes well the reader may put down the book at the end and say what the author - and this author is no exception - most wants to hear:'I learned a lot from your book, but what is more to the point is I had a very good time.