What Goes Wrong in Dialogue
The methodological problem is not reducible to model hallucination. A dialogue can remain formally coherent while becoming contextually distorted. Risk can appear through over-reliance, authority transfer, repeated validation, framing drift, contextual closure, or weakened user-side recognition of the limits of the interaction.
This is why the branch centers the interaction trajectory. The question is what the conversation becomes, not only whether a given answer violates a static rule.