使用 vi.skip(1) 最初看起来可能有点怪，但是如果看到了版本历史的内部保存机制，就应该很清楚这种用法了，版本历史的内部保存机制如图 3 所示

Usingvi.skip(1) may seem peculiar at first, but its usage is clear when you see how version histories are stored internally, as illustrated in Figure 3

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当你踢、打或扔它的时候，能量通过这些机制保存在里面，而不是散失到环境中。

When you kick, hit or throw it, energy is then kept in it by these mechanisms instead of disappearing into the environment.

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一个同等重要的，能够帮助保存有用的行为模式的机制就是习惯。

An equally important mechanism that assists in the preservation of useful behavior patterns is habit.

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