Beyond Final Answers: Information-Architecture Blindness in LLM Belief Updating
M. Emre Bilgin
conference 2026
tldr Final-answer accuracy can hide important failures in LLM reasoning. We introduce a human-grounded, Bayesian-referenced benchmark showing that many LLMs fail to update their beliefs at the right time and for the right kind of evidence. We call this failure mode information-architecture blindness: weak sensitivity to whether evidence is carried by individual cues or by relations between cues.