Questions can be intimidating
Sometimes questions, both from the receiving end and the asking end, can be intimidating. encourage students to feel comfortable coming and asking questions, but also don't feel as though you have to make up an answer if a student asks you something you don't firmly know the answer to. i agree with the informational policy of admitting you dont know the answer, but will research and find out.
I completely agree with this post. I am a nursing instructor and have been told different methods regarding answering questions that you do not know the answers too. Some instructors have suggested never admitting that you don't know. I have tried this in the past, by either making up some answer that sounds dignified or by saying that if they don't know then they need to research this themselves. This method has not worked for me. Students can read right through you when you pretend to know the answer. I prefer to tell that student that I am unclear of the exact answer and do not want them learning something wrong. So, I go and look up the answer and report back to the student. The students respect this.