I found this piece of paper today. It’s one end of a rolled up, cut out length of a page from the Financial Times. I’d been looking for it. The bit you can’t see is what I used to measure, and mark up, the dimensions of three different bowls of Phở in Việt Nam. You see, I had a theory about size, but no tape measure and it’s evidence like this you need, if you are required to prove a point.