When Fern and I skated through the Park, we were never silent. We laughed, we shrieked, we traded insults when we were close enough to do it without calling down the wrath of Security, but we never held our tongues. It was a safety precaution. By making noise, we made sure anyone else in the area knew where we were, and we avoided collisions. For me to come skating silently out of the dark was a bad sign. For me to grab her arm and whisper, “Run,” was a disastrous one.