Definitely a great post. Whenever I take the train or the mini-tube (ok, so it's really only a model here in Glasgow ^_^), I try to place myself as close as possible to the door that will be closest to the stairs at my exit so that I can run up the stairs faster than the people can get off the train. I loathe slow-moving people (except for the people expected to be slower such as elderly, 8-month-pregnant moms with a pram, etc) and it's better for my sanity to avoid that as much as possible. I actually dislike going shopping when there's a crowd because, in my pessimistic outlook, there are going to be hundreds of slow-moving people who stop and chat in the middle of an aisle--if not at the intersection of two.