但是一名年老的军事观察家确信，同敌人接触的计划是无一存活得。
But an old military saw holds that no plan survives contact with the enemy.
也许弗里德里克·尼采“信念是比谎言更可怕的真理的敌人。” 的观察更让他们警惕。
Perhaps they were more mindful of Friedrich Nietzsche's observation that "Convictions are more dangerous enemies of truth than lies."
它最初是运用在军事方面，你可以用它来观察敌人的行进路线，数量多寡以及其他一些细节。
Its initial usages were, things like military, you can see when the enemy is advancing you can see how many there are and so on.
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