"Many of the students who arrive at very competitive universities pride themselves in not making mistakes—after all, that’s how they’ve come so much farther than their classmates, or so they have been led to believe. I often find that I have to encourage them to cultivate the habit of making mistakes, the best learning opportunities of all. They get “writer’s block” and waste hours forlornly wandering back and forth on the starting line. “Blurt it out!” I urge them. Then they have something on the page to work with."