Since mid-March, when my position at the Teachers College Gottesman Libraries shifted to work-from-home, I’ve been out of the apartment early most mornings to bike. To facilitate social distancing, I practice my routine close to dawn. If you also happened to be in the park at that time, you might not necessarily make out my face as you whizzed - or ran - past. But you could still distinguish me from most of the other early birds if I revealed but one fact about myself: I’m the one who waves. To indulge in my original play on a well-known expression, I would say: if you see someone