The entire moral quandary behind minority report could be avoided simply by having police monitor people, and if they are actually about to commit murder---prevent it and arrest them for attempted murder.
The reason they didn't do that was simply because it's a movie, and movies work better if instead of picking a compromise point between our society and some future ideal---you just pick the future ideal that will seem crazy to people.
It's like Logan's Run (movie) where the issue isn't just that you kill everyone over 30 to save resources, but that you lie and pretend no one can physically live past 30 and everyone gets reincarnated. They inserted the moral quandary to make the story interesting.
If the only moral quandary you see with Minority Report is that they do the arrests before the crimes happen then I sincerely hope you're never in a position to guide public policy on anything really.
The reason they didn't do that was simply because it's a movie, and movies work better if instead of picking a compromise point between our society and some future ideal---you just pick the future ideal that will seem crazy to people.
It's like Logan's Run (movie) where the issue isn't just that you kill everyone over 30 to save resources, but that you lie and pretend no one can physically live past 30 and everyone gets reincarnated. They inserted the moral quandary to make the story interesting.