The Party seeks to control the present and future by controlling how citizens remember and think about the past. It destroys all records and documents from the past through "memory holes" to ensure there is no accurate information about history that contradicts the Party's version. Due to this rewriting and erasure of history, Winston is uncertain about key historical events and dates, and there is no certainty about what actually occurred in the past. The Party also manipulates people's minds through propaganda and torture to ensure citizens accept the Party's version of history as the sole truth.