如果你愿意，你可以从最后一章开始倒着读，或者打乱顺序去读，都不会遗漏任何一点。
You can begin in the last chapter, if you like, and read backwards or in any order, without missing anything.
不要害怕打乱顺序从头来过。
打乱顺序最糟糕的结果是造成数据混乱，最幸运的结果是大块样本同步代码出现bug。
What results instead of order is, at worst, chaos and, at best, large blocks of boilerplate synchronization code prone to bugs.
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