When I was in high school, I missed a lot of questions on a lot of tests. But there’s one question I’ll never forget. It was pretty simple. The image displayed a slice of the earth’s interior, with a question: What is the name of the stuff in the middle? I thought of two answers. One was “the core of the earth,” because that IS the middle (and was the correct answer). But I tried to outsmart the question, and … Read More »