One of my favorite hobbies is watching people on the train. Some on their daily commute, dressed in suits, hurriedly sipping coffee, checking their wrists with frequency, ensuring they arrive not even a minute late. So many, myself included, travel along to their own soundtracks, earbuds helping them to tune out the cabin noise around them. Bodies swaying back and forth, movement in sync, limbs dancing the train's tango, left, right, forward, and back, and for the encore, we all jolt and jive hard as the wheels screech to a stop halfway down the green line.