You made points bro. But i believe that having and reading the books do actually call for change esp. in behavioral pattern until we applied the acquired knowledge. Doctors will stop smoking if they retire all other factors and consider the note that "smoking is harmful to your health". Similarly, the police and others will stop taking bribes when they acknowledge that it is not an incentive but crime.
The worse of it is bribery in our educational institutions these days, which has sugar coated and neatly package in disguise called PROTOCOL.... These institutions harbour books oooo. Hahaha