I don't teach it anymore, but I used to teach the very first class of the nursing program. I would tell them that they were standing in a dark room holding a match. In a few days they would start to understand a few things, but it would be like trying to see the corners of the ceiling by match light. Each class they would get a progressively bigger light, candle-light, flashlight, ect. I told them at no point would they ever be in a room where the light showed everything, because no one can know everything. So, at times… >>>