Don't sweat the sim stuff; they're trying to challenge us there. Lesson learned, so now you know better in 'real life'. Yeah, it's a bad mistake, but we're in school because we still have a lot to learn. If we were already prepared and good to go, we wouldn't need to put ourselves through this hell. :) I try to be grateful for the inconsequential mistakes I make in lab, because it embarasses me enough that I'm especially careful and thoughtful later on when confronted with similar situations. Don't defeat yourself, come forth from the flame as gold.