Perspective on today's mass shooting at Fort Hood

From James Fallows:

In the saturation coverage right after the events, the "expert" talking heads are compelled to offer theories about the causes and consequences. In the following days and weeks, newspapers and magazine will have their theories too. Looking back, we can see that all such efforts are futile. The shootings never mean anything. Forty years later, what did the Charles Whitman massacre "mean"? A decade later, do we "know" anything about Columbine? There is chaos and evil in life. Some people go crazy. In America, they do so with guns; in many countries, with knives; in Japan, sometimes poison.