ABSTRACT
Let me start by describing an accident that happened as I was working on the introduction to this book. There is no special reason for taking this accident as an example, except for the fact that it did take place. In that sense it is typical of the multitude of accidents that happen all the time. Whenever I open a newspaper, listen to the radio, or log on to the Internet, I can most likely find another accident that will serve just as well. Certainly, not a single week goes by without a major accident grabbing the headlines across the media, nationally and internationally.
