牢记遗忘的重要性

新加坡—“在Facebook上发帖要小心”，美国总统奥巴马去年九月提醒美国的高中生们。“不管你做了什么，它都会在你今后生活的某个时刻沉渣泛起。”

实际上我们都是吃一堑，长一智：数码化的信息几乎永远挥之不去，即便我们想让它消失。其结果就是我们过去的阴云笼罩着现在的生活。当电脑和因特网日益成为生活中不可或缺的一部分，这一现实也是社会所面临的最大挑战之一。

数千年以来，记忆信息一直是件昂贵且费时的事，而遗忘则是人的本性使然。在数码时代，情况则相反：低成本的海量储存、强大的处理器、无所不在的因特网令记忆成为一种常态。

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