Put yourself in this imaginary scenario… There has been a disaster in, say, New Orleans. Everyone working on the ground has said that the best thing people can do to help is provide cash. You have $100 in your pocket. Faced with the implications of what Katrina means, what do you do with the money? Fill the gas tank of course. (I have a better idea…take the bus, or take a week off work and put that money to better use)