[danpalmer]

Just anecdotally, I'm more productive in languages that I know _and_ which have good LLM understanding, than in languages that I'm just experienced with.

As much as I dislike Go as a language, LLMs are very good at it. Java too somewhat, Python a fair amount but less (and LLMs write Python I don't like). Swift however, I love programming in, but LLMs are pretty bad at it. We also have an internal config language which our LLMs are trained on, but which is complex and not very ergonomic, and LLMs aren't good at it.