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Revealed: a California city is training AI to spot homeless encampments
(www.theguardian.com)
This is a most excellent place for technology news and articles.
Case in point: https://en.wikipedia.org/wiki/ADE_651
Basically a dowsing rod, totally incapable of detecting bombs, drugs, etc. But possibly still useful as a probable cause generator.
That was probably one of the more depressing Wiki articles I've read in a minute.