We scrambled onto the train, the weary parents with their little kid. I got on first with Jackie, listing against me the way kids do, and bobbing her head around. She careened dangerously close to the pole, the seat, surfaces surely contaminated with New York City filth.

“Don’t let her put her face on anything,” Sara called out across the car.

I sat down with Jackie and noticed a guy next to me, a young guy, writing something in a notebook. I read over his shoulder.

“Don’t let her put her face on anything,” he wrote.