"In these cases, if you give the LLM explicit permission to tell you that it doesn't know in cases where it's not sure, that will significantly reduce hallucina

"In these cases, if you give the LLM explicit permission to tell you that it doesn't know in cases where it's not sure, that will significantly reduce hallucinations." I've noticed that while this can help to prevent hallucinations, it can also cause it to go way too far in the other direction and start telling you it doesn't know for all kinds of questions it really can answer.