In the movie class mobility is impossible. Not improvable, not very difficult, but predetermined at birth. In reality it can be impossible for some people, but

In the movie class mobility is impossible. Not improvable, not very difficult, but predetermined at birth. In reality it can be impossible for some people, but there are many examples of people accomplishing this, some with lots of effort. I believe the absolute determinism of that society is what makes it a nightmare. Saying that it is the same as reality is, IMO, an exaggeration.