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AI System Detects Social Norm Violations
(neurosciencenews.com)
This is a most excellent place for technology news and articles.
This sounds like a prequel to the show Psycho-Pass.
Psycho-Pass raises a lot of interesting questions and dilemmas because the technology depicted actually works in that setting (aside from a few outlying cases that help drive interesting plots). If there was a scanner of some sort that actually genuinely could detect violent intention before it was acted on then I think it would be reasonable and moral to use it in at least some manner.