Regarding the future... You know how adware knows what you're doing via the cookies or whatever

Why don't they use that same system to predict when someone might commit a crime, or better still if they HAVE committed a crime?

Adware knows that when I listen to a lot of music, one track after another that I am probably drinking
and usually it's right!

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ArishMell · 70-79, M

It does not know what you are doing.

It merely estimates what goods or services might interest you, based on your past purchases and social-media use, the latter including via eavesdroppers like "Alexa".

It can not predict any future action by anyone, criminal or innocent; nor record past actions outside of purchases. However, analysing communications history sometimes reveals pieces of evidence of a crime already committed.

It is still intrusive and unpleasant though, showing the depths the social-media and advertising tycoons inhabit.