How does Big Brother watching over the people of Oceania prevent the people from rebelling?

The very
fact that someone is watching over you does something to your psychology. In the least it makes
you feel deeply uncomfortable. Even if you are not sure that they are watching you every second,
the randomness of the watching is also a great deterrent from rebelling. Now if we couple this
with the power of the state, the act of rebellion is even more unthinkable. Finally, we need to
consider the fact that the people of Oceania are without power. Therefore, what we have is power
and omniscience on the one hand, and powerlessness and nakedness on the other. With these odds,
rebellion is almost unthinkable.