Someone I know produced the diagram above in her planning steps to produce the shelves seen below.

This person describes herself as "not a math person." What do you think? Is she a math person or not? It worries me that we have all these people walking around thinking they aren’t "math people" when in fact, they quite obviously are. We need to do a better job of explaining the difference between every day mathematical reasoning, which quite a lot of people are good at, and the formal systems of mathematics that have taken generations to develop.