> Why would anything change? It's not that facts change across time, but the relevancy of the details change. For example, it would be great if we could teach

> Why would anything change? It's not that facts change across time, but the relevancy of the details change. For example, it would be great if we could teach LLMs all the APIs all React versions have ever had, but if we do that for everything, there will be no limit to the weight's weight, and we'd need new weights every quarter if not more often. That seems very unsustainable. So the information that corresponds to "What is the current React API for X" changes whenever the API changes, but "What is the React v5 API for X" remains the same. Having the model being able to look up those things via external channels would let us use the same models for way longer, if you need "up to date data" about things.