Yes, I've always wanted to be able to stop time. Mostly I want this when I need to take a break to nap or relax, but can't. Thinking about it now, though, it would also be great for my engineering exams. Let's be honest, no engineer is ever going to completely design and sign off on something, calculations done and all that, without referencing something. How annoying is it, then, that we can't double check a mathematical formula or a definition in order to move on with answering a test question? The profs routinely admit to needing references all the time.