Faber is a retired English professor who is a key figure in the story. He doesn't invent anything in the traditional sense, but he is a key figure in the preservation of knowledge and culture. He has been secretly collecting books and advocating for intellectual freedom in a society where books are banned and knowledge is suppressed.
Faber's importance lies in these key roles:
* Preserving knowledge: He has been collecting books, acting as a repository of forbidden information and a conduit to spread knowledge.
* Providing guidance to Montag: He mentors Montag and helps him understand the value of books and the importance of critical thinking.
* Acting as a symbol of resistance: He represents the intellectual and moral opposition to the oppressive society, advocating for freedom of thought and expression.
While Faber doesn't invent a physical object, his actions and beliefs are crucial for the development of the story and its themes. He represents the power of knowledge and the importance of fighting for intellectual freedom.