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Study Reveals LLMs Limit Deep Learning, Web Searches Excel

1/19/2026

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Summary

Story summary

Shiri Melumad and Jin Ho Yun published a study in PNAS Nexus showing that learning from large language model summaries yields shallower knowledge than traditional web searches.
The experiments involved more than 3,000 participants comparing advice from LLMs and web searches.
Participants using LLMs spent less time learning and produced less original, less persuasive advice, which highlights limitations in fostering deep learning.

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Story summary

Shiri Melumad and Jin Ho Yun published a study in PNAS Nexus showing that learning from large language model summaries yields shallower knowledge than traditional web searches.
The experiments involved more than 3,000 participants comparing advice from LLMs and web searches.
Participants using LLMs spent less time learning and produced less original, less persuasive advice, which highlights limitations in fostering deep learning.