Every day at 8:05, Iona Iverson boards the train to go to work. As a seasoned commuter, she knows there are rules that everyone should follow:You must have a job to go to. Don't consume hot food. Always pack for any eventuality. You must never speak to strangers on the trainIona sees the same group of people each day - ones she makes assumptions about, gives nicknames to, but never ever talks to. But then, one morning, Smart-but-Sexist-Surbiton chokes on a grape right in front of Iona.