Why LLMs can't handle everyday social etiquette in Persian:

Reading between the lines, this is a really good caution for any diplomats who are thinking of firing their interpreters and replacing them with "AI".

https://arstechnica.com/ai/2025/09/when-no-means-yes-why-ai-chatbots-cant-process-persian-social-etiquette/

When “no” means “yes”: Why AI chatbots can’t process Persian social etiquette

New study examines how a helpful AI response could become a cultural disaster in Iran.

Ars Technica
@cstross
They're not very good at complex European, either. I often find LLM chat is creepy to the point of being scary. If it were a human it would come across as psychotically manipulative and possibly about to pull out a sharpened machete while smiling.