I’m sorry, what? First of all, am I dumb? Don’t answer that. Did I ever, at any point in my miserable existence, learn how to solve this problem? The kid, a girl, didn’t even ask me to help; I just happened to glance down over her shoulder as I was walking by huffing a marker and making paper airplanes out of all my letters from the IRS, then walked right into the wall because I was so confounded by her homework.