To sow this kind of chaos with the tiny army he had been able to bring over the Alps, Hannibal had to make his every action unexpected. A psychologist before his time, he understood that an enemy that is caught by surprise loses its discipline and sense of security. (When chaos strikes those who are particularly rigid and orderly to begin with, such as the people and armies of Rome, it has double the destructive power.) And surprise can never be mechanical, repetitive, or routine; that would be a contradiction in terms. Surprise takes constant adaptation, creativity, and a mischievous pleasure
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