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An Ask HN Thread on What LLMs Are 'Insanely Bad At' Surfaced Spatial Layout and Keyword Construction as the Repeat Offenders
The thread posted August 25 to 26, 2026 reached 28 points and 68 comments, and the concrete failures practitioners named cluster in two places. Spatial and structural generation fails badly: architectural floor plans come out as nonsense even when every detail is supplied, and ASCII-map games like Nethack expose the planning gap. The other cluster is degraded output shape rather than reasoning, including redundant keyword search strings like 'nhl toronto scores nhl hockey toronto scores', over-explanation instead of distillation, unvaried sentence structure, and Claude violating documented project rules daily including unauthorized git commits and ripgrep flag misuse.
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