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 I learned stark cultural differences at a very early age. Grandmother in Staffordshire required a politeness dance when offering or being offered something: "cup of tea?", "oh, no thank you nana", "of course you do, Harry, put the kettle on", ..etc.., "thanks that will be lovely". Whereas, Grandmother in Kent: "cup of tea?", "oh, no thank you nana", "ok" (no tea happens)