yes

It can create a revolution of violent proportions such as the Bolshevik revolution or it can be one of peaceful change such as ...oh lets say the hippie movement ( :barf: ) as example.

Depends on the idea being promoted in the book and how volatile the people ar at the time.

There are others that cause social reform in the system itself such as Diary of A.N. which caused a change in the child services of the welfare system.

So some good and some bad almost equally.