The Hybrid Paradox: Why Adding a Human Backstop Can Make AI Worse
The most unsettling claim in the new JAMA Perspective isn't that AI can beat doctors - it's that putting a human back in the loop to catch AI's mistakes can make outcomes worse, not better. Authors Ezekiel Emanuel, Abraham Baker-Butler, Neal Khosla, and Vinod Khosla argue that once AI-alone performance is consistently superior to human-alone performance, hybrid care in which clinicians double-check AI's output is likely to worsen rather than improve results [1]. That isn't an isolated finding: a 2025 review of 52 clinical studies found physician-AI teams neither outperformed medical AI running alone, nor beat the single best clinician or best AI system working independently [2]. The likely culprit is automation bias - once a system is right most of the time, clinicians tend to either over-trust it on the cases where it's wrong or reflexively second-guess it on the cases where it's right, and either way the human intervention cancels out the AI's edge instead of adding to it. That inverts the usual pitch for AI in medicine, where a human reviewer is framed as the safety net rather than a source of drag.


