No complaints about my students so far. It's a pretty theoretical course that spends as much time just learning the "concept" as applying it. Rather introductory, as the name might suggest.
Last class, I was explaining the concepts behind Certainty/Uncertainty. One student was simply not understanding the concept. I tried working my way around and explaining it a different way. I tried googling it and reading that. Nothing worked. In the lull as I was trying to think of/find a way to explain it to her, another student said "Look, it's like this." He put his hand under the desk and said "My hand is definitely somewhere under this desk. If you're asked whether or not my hand is under this desk, you are 100% confident that it is, right? But if someone asks how confident you are that it's under the *left* half of the desk, you're only 50% confident."
And she immediately understood it. As happy as I am that I explained the concept well enough for one of my students to elaborate upon it for his peer (and as impressed I was with an excellent illustration of it), I couldn't help feeling a bit jealous that his explanation had worked and mine had not. Honestly, part of me is tempted to use his analogy if I teach future classes because I think it's more effective than graphs (though I'll obviously still have to use those).
Q: Has a situation like this ever happened to you? Where either a tutor / another professor / student gets one of your pupils to understand something after you failed? Are these feelings natural / will they go away?