The most interesting part is this learning regarding Persian etiquette will neither be permanently valid (if this social norm significantly changes in the next year or two there will be a mixed situation), nor easily applicable to anything else.

As presented in the article 18% of humans fail at this, so there might as well never be a satisfying handling of these subtleties on the AI/LLM side.

I wonder how memes fare in that regard, especially the vibrant but short lived ones.