While getting off a packed bus, I stepped over a stroller and as my right knee was coming over, it hit the baby sleeping inside on the left cheek. I blurted out, “I’m sorry. I’m so sorry,” as I, without thinking, as if instinctually, reached down and gently stroked the child’s cheek. Maybe I was trying to wipe the pain away, or maybe it was my guilt. My right knee still feels strange, like it’s covered by an itch I can’t scratch. The baby didn’t even wake up.