Lately I have been thinking about the phenomenon colloquially known as the generation gap. I have not been blessed with a time machine, so I have no knowledge of whether or not this phenomenon is more prevalent in ages past than in recent times. Therefore, all of the following must be considered merely as speculation. In Alvin Toffler's classic Future Shock, the point is made that a) change has run rampant in the 20th century; b) the rate of change has increased--there are more differences in, say, the make, model and color of automobile than there have ever been; c)...