My final on Monday morning went alright, all things considered. We were allowed to bring a sheet of formulas, and wouldn’t you know it, there’s always one problem that requires a formula that you forgot to write down. So you’re stuck banging your head on the desk and trying to piece it together out of memory, which of course never works. At that point, the crazy idea occurs to you “Hey, maybe I can derive the formula starting from scratch!” That lasts about 5 seconds. Following that, you muddle through the problem the best you can and go through the rest of the test being gnawed at by the knowledge that you could have easily gotten it right if only you had remembered to simply write down the formula. Really, is that so hard to do? Anyway, other than that annoyance, it went just fine.