1 Approach stairs heading towards train platform and take a few steps upwards. 2 Notice suburban family walking down the stairs. 3 Note that the mother and young daughter are walking hand-in-hand down the steps with each person holding opposing handrails. 4 Conclude that the daughter will not let go of handrail and her mother will not ask her to get out of a stranger's way. 5 Retreat backwards down the steps so the family has a clear path down the steps. 6 When you back off the last step onto the sidwalk, inadvertently step on a woman's toe with the heel of your shoe. 7 When your apology and polite concern is ignored, shrug shoulders and continue as if nothing happened. Realize a few hours later that she could have been in too much pain to respond. Oops.