> But threatening to shoot up a school, in the light of recent events... really? What if he actually DID shoot up a school, and afterwards people discovered tha

> But threatening to shoot up a school, in the light of recent events... really? What if he actually DID shoot up a school, and afterwards people discovered that authorities WERE warned? I'm not sure why this part matters. The prosecutor might be fired, but at least an innocent boy is not raped while waiting for trial? The boy had no means to carry out the threat -- they searched his home. Your scenario works fine for Minority Report, but not in real life.