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Simon Willison’s Weblog 1 month ago 29
Linus Torvalds described a difficult Linux kernel debug session in which an AI handled much of the basic debugging work and even helped write a commit message.
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19 October 2026
The day’s biggest thread was the messy middle between “agents that act” and the systems that prove they won’t act badly. Hugging Face policy chief Irene Solaiman warned that embedded AI evaluators and today’s benchmarking are still too immature to trust without better reproducibility and clearer comparisons, especially as evaluation is shifting from model-only tests to full-system setups that include the harness and agent—raising cost and forcing standardization. That concern landed alongside a Princeton-led paper on emerging agent-evaluation trends: ExploitBench runs can burn tens of thousands of credits, and the authors argue the field needs more independent, multi-layer evaluation, including real-world and human-impact studies, plus a better evaluation ecosystem.
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