Orwell's novel has been quoted so often that it's possible to think you know it without having read it — but the actual book is stranger and more claustrophobic than the vocabulary it gave the language. Newspeak, doublethink, and Big Brother are the parts people remember; the parts that actually land on the page are the slow psychological erosion of Winston's private self and the horror of Room 101, which withholds nothing.
What sets 1984 apart from lesser dystopias is that it isn't really about a government — it's about the limits of interior resistance under total surveillance, and Orwell's answer is bleaker than most adaptations let on. The novel doesn't end with defiance rewarded; it ends with defiance dismantled, and that refusal to offer comfort is exactly why it has stayed unsettling for seventy-five years.
The middle section, built around Goldstein's book-within-a-book, slows the plot to deliver its political theory directly — a structural risk that mostly pays off because the ideas are doing real work, not padding.