Trust But Verify: Schemas, Metacognition, and the Limits of LLM Intelligence A recent paper— “Hallucinations Undermine Trust; Metacognition is a Way Forward” by Gal Yona, Mor Geva, and Yossi Matias—argues that large language models need better self-awareness. Not just more knowledge, but an ability to estimate when they might be wrong. That’s a useful step. It’s not enough. Because hallucinations are not just failures of confidence. They are failures of structure . The Missing Layer: Schemas The current conversation around LLM reliability focuses on accuracy and uncertainty: Improve training → reduce hallucinations Add confidence estimates → calibrate trust Introduce abstention → avoid wrong answers But this entire frame assumes the model is operating inside the correct conceptual system . That assumption fails in practice. What’s missing is the idea of a schema : A structured representation of what exists , who owns what , and how respon...
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