How does the past Oceania differ from the present Oceania in 1984?

In
, it is very difficult to compare the past Oceania with the present. While
we can state that there were no telescreens or ministries, for instance, it is almost impossible
to make any other comparisons because the Party has rewritten the official history in a way
which glorifies Big Brother and the revolution which brought him to power. Here's one example
from a history book whichreads in Part One, Chapter Seven:

"In the old days (it ran), before the glorious Revolution, London was not the
beautiful city that we know today. It was a dark, dirty, miserable place where hardly anybody
had enough to eat and where hundreds and thousands of poor people had no boots on their feet and
not even a roof to sleep under."

Winston tries to
confirm this view by...