How many people know what etiology is? Wikipedia defines it as ...the study of causation It's a fancy term for cause and effect. Fancy or not, though, it can have useful applications in real life. In the medical world, it might be used in a study of the spread of an epidemic. In computers, we might apply its principles for analysing a chronic network problem, as in deciding if multiple people, reporting the same symptoms, implies the existence of a major, widespread computer problem. Have you ever been to a hospital, and seen many sick people? If you did go to a hospital, would seeing the many sick people there lead you to conclude that there is a worldwide epidemic in progress? Most people are too analytical to lead to that conclusion. They know that a hospital is where sick people are expected to be seen. Oddly enough, though, many folks who wouldn't make an assumption about a medical epidemic, based upon being in a hospital, will visit a technical help forum,...