The system is perfect until it comes after you.
Why it is hard sci-fi
Set in 2054 Washington, where a precrime division uses three precognitive humans called precogs to stop murders before they happen. The film follows the legal architecture of acting on a prediction, and the central tension is the existence of a minority report, a dissenting precog vision, that the system suppresses. Spielberg assembled a panel of futurists for the technology design and most of the gestures stuck.
Science inside it
Predictive policing, gestural interfaces, retinal biometrics, and pre-emptive criminal prosecution. The film engages honestly with the question of free will under accurate prediction. If the system can identify a future murderer, has the murderer already committed the act? The court answer in the film is yes, and the protagonist spends the rest of it disproving the courts answer.
Spoiler alert
The minority reports are deletions, not exceptions. They are the cases where the prediction was wrong. The director of precrime engineered an early case to cover a personal murder, knowing the dissenting vision would be hidden by policy. The system was never an oracle. It was a forecaster with a cover-up department.