It’s raining, late in the evening and you have been driving for most of the day. You want to get home. It’s cold and the pangs of hunger stir. You are on the home straight, and through the darkness and rain your beams of light illuminate the familiar. Suddenly ahead of you a car is on the side of the road, hazard lights flashing, a lone stranger is attempting to change a tire. Assuming that you know your way around a tire and you are not concerned for your safety, many of us would stop and offer assistance. Some may drive on, declaring that it’s none of their business. Assume that you do...