This portion of the end of the book was awful to endure through and read. I felt the pain as much as Winston, and I was only reading it. I feel the author did a very good job on making this scene awful and gruesome. It was clear to me that O'Brien enjoyed hearing the deafening screams coming from Winston due to how much this "torture machine" really hurt. Whereas now-a-days we'd look at that as something probably impossible to do unless you were a serial killer, O'Brien did it with pleasure and ease, and quite often he did it daily. The fact that Winston saw four fingers constantly, which was in reality the truth, he was continuously struck by this machine. This is clearly an example of symbolism towards how the Party would manipulate every single citizen. If they said five, you had to say five, and if you didn't, you were tortured. Whatever they say, you must go along with and act as if it's the complete truth. Big Brother had quite the handle on these people, making them believe that whatever the Party decided was a moral fact and correct. It truly put the people in a very unfair situation in which they had no freedom or say.