2. When applying for parole, the prisoner did not say that the reason why he came in was just because of the experiment. They all wanted to go out so much, but they still did not clearly and formally express that they wanted to withdraw from the experiment (it is one thing to say no, it is another thing to let the organizer let them withdraw).
3. I have seen another film about the Stanford Prison Experiment (Death Experiment. Das. Experiment. 2001), the violence in that film is gradual, and the prison guards will abuse the prisoners basically at the beginning. I really don't know how much difference there is.
Having said so much, I just want to say that the experiment is a rare experiment, and the thoughts I want to express are also very good, but the plot is really unreasonable. For a psychological or suspenseful movie, if the plot doesn't make sense, no matter what it's trying to convey, the movie doesn't qualify. If you don't pay attention to rationality, then make do with it.
View more about The Stanford Prison Experiment reviews