Why I Don’t Trust LLMs to Decide When the Weather Changed

Towards Data Science / 5/6/2026

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Key Points

  • The article argues that LLMs are not trustworthy for making decisions about when weather changes, based on how such decisions must be grounded in reliable evidence.
  • It describes a physicist’s mindset for building production-grade agents, emphasizing validation, robustness, and alignment with real-world constraints.
  • It contrasts the probabilistic, language-driven nature of LLM outputs with the needs of decision-making systems that operate under uncertainty and require dependable triggers.
  • It suggests that effective agent design should rely on appropriate models, data pipelines, and verification rather than letting an LLM directly act as the sole decision authority.

A physicist's approach to building production-grade agents

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