> train a LLM a closed set of curated knowledge Google has one of these already, with an LLM that was trained on nothing but weather data and so can only give

> train a LLM a closed set of curated knowledge Google has one of these already, with an LLM that was trained on nothing but weather data and so can only give weather-data-prediction responses. The 'knowing it doesn't know things' part is much harder to get reliable, though.