The protagonist is unable to make a physical record, and so must trust his brain retain any proof of the government's wrongdoing.
However, the brain is a poor vessel for this - it can be manipulated and tortured to discount information. And so, Winston ends up loving Big Brother.
Paper and bits are what we rely upon; there is a reason eye-witness reports are trusted so little in comparison to physical evidence.
The protagonist is unable to make a physical record, and so must trust his brain retain any proof of the government's wrongdoing.
However, the brain is a poor vessel for this - it can be manipulated and tortured to discount information. And so, Winston ends up loving Big Brother.
Paper and bits are what we rely upon; there is a reason eye-witness reports are trusted so little in comparison to physical evidence.