In the book it is thought that without books and actual learning and just having fun that they have created the "Perfect Society".
No Independent Thought
Everyone in this society has been taught that there is no need for safety and for learning. Everyone in the society has been taught to hate books and to just care about having fun no matter the consequences even if that consequence could be death or a serious injury.
In this society everyone is the city is under watch by their government or the firemen in the place they live. Each house is housed with an alarm and a cameras that make sure no one is to every have a book in their home.
Lack of Free Will
Everyone in this society thinks the same which means they don't really think at all. No one in the society is allowed to be taught actual things the most important thing they learn in school is how important it is not to care about others and how important fun is.
The government in this society decided that if someone is not happy with one thing or one opinion of a person that they where going to completely cut that thing out because they want everyone to have fun and not worry about anything.
The people in the society can't to do are not allowed to own or read any books at all. They can't harm or kill firemen. They can't have regular technology and aren't really allowed to know whats going on outside of their city unless the government wants them to.