feynman

The Subtle Instability of Deterministic Large Language Models: Unpacking the "Feynman Anomaly"

By Evan Lee Salim

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9 Min Read

In September 2025, a seemingly simple experiment conducted by Horace He and his team at the Thinking Machines Lab inadvertently illuminated a fundamental fragility within even the most rigorously controlled large language models (LLMs). The researchers…