from Chris

Every semester, on the last day of class, I invite my students to go for a walk with me. It’s a short walk, usually just a lap around our loop-shaped hallway. I let the scuff of my cowboy boots on the tile floor lead the way.

As we depart, I give the students two rules. I ask them not to talk, and I tell them, “Notice things.”

The purpose of the exercise, which I do on the first …