所以当我们个人的历史能够帮我们明白如何或为什么事情会变成今天这个样子，事实上，它经常不能够告诉我们此时此刻做什么可以改变事情。
So while our personal history can help us understand how or why things may have become the way they are today, it often cannot actually tell us what to do to change things right here and now.
答案很简单，你不能在一夜之间就完全改变历史。
The simple answer is that you're not going to change all of that history overnight.
虽然不能改变浏览器历史记录，但是可以自己构建一个在RIA中使用的历史记录。
While we cannot interfere with the browser's history, we can build one of our own for use in our RIAs.
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