> they already know the main point of the book. If the only important information in the book was its main point, it wouldn't have needed to be a book. It coul

> they already know the main point of the book. If the only important information in the book was its main point, it wouldn't have needed to be a book. It could have been a leaflet. Or a bumper sticker - those can be very catchy. It's worth reading the book for all the other words it contains.