When I was at university I had a fool-proof method for selecting student union representatives when elections were held. I automatically discounted anyone who stood up and announced that what we needed was change. We always need change, although it’s usually quite useful to check what exactly needs changing, and whether right now is the best time to do so. Anyone who announced that we needed change, but without going any deeper into it, was an idiot as far as I was concerned. Either that, or they assumed that I was.