Sometimes, perhaps once in a few generations, a nation can undergo what a mathematician or physicist would call a "phase change." The classic example of such a thing is a pile of sand. Every grain you add makes the pile slightly steeper and slightly higher without moving any of the other grains inside the pile, until eventually one grain is added that causes an avalanche of sand down the sides of the pile, moving thousand of grains and changing the shape of the pile...
The average American may not know what is to be done, but she can sense when the system has exhausted all its possibilities. At that point, not only does the phase change become reasonable; it becomes desirable -- even if what lies on the other side cannot be known.
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