A lot of crimes can be solved or prevented if we ditch all constitutional protections and give unlimited power to the state. Still not a good idea.
Our ancestors recognised this a long time ago, and recognised that there's an intrinsic balance between individual freedoms and the degree to which laws are enforced. We are shifting hard and fast to the extreme authoritarian end of that scale.
That's called science fiction. :)
You might be able to punish 100% though.
Of course it is. I could be perfectly normal and ok, you invite me to dinner, we sit down, I don't like the way you prepared the potatoes, take my fork and stab you without any warning at all. Even if you survive a crime has been committed.
... Not everything is an absolute. There is a reason why the court of law was generally depicted as an old ... balance (noun)