The book explains how the party erased history and erased the erasure of what country Oceania was was fighting. Forgetting who the country was fighting made others believe it was like this all of the time, therefore making it the truth.
What if I told you that the left wing and the right wing belong to the same bird. And this is why I'm not sure about Trump. Instead of draining the swamp I think he may have jumped in with the rest of the billionaires