In the context of this comment thread:

False positives = someone wrongly accused of a crime by the police.

After the accusation follows a trial (this is the judicial system) where the wrongly accused can prove that they in fact did not commit the crime.

Thus judicial system is setup to deal with the false positives.

That doesn't prevent the false positives, just cuts the process off before prision. And studies show that 2-10% of the incarcerated are wrongly convicted or completely innocent. Also, involuntary commitment could be a civil law which does not carry with it the same protections as criminal law, depending on how it's defined. So I'm still not seeing how this prevents false positives.

I think you have a different threshold for the word "prevent". Which is fine by me.

It sound like maybe you mean reduce, not prevent.