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Tech & Innovation·August 5, 2026·1 min read

TikTok kept a safety fix from 15 million US users “by design,” a sealed document shows. One was a teenager who died.

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Holding 10% of US users — about 15 million people — on a less safe algorithm as a control group shows how far growth experiments can stretch ethical boundaries. Any team running large-scale behavioral tests should revisit who can veto an experiment when safety and engagement collide.