来自《耶鲁大学开放课程：博弈论 第13集 第13集》
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Let's be careful about this.这里要注意一下 -
What makes it a sequential move game它之所以是贯序博弈 -
is not simply that Player I moved first并不是简单得因为参与人I先行动 -
and Player II moved second, although that's true,然后参与人II再行动 尽管的确如此 -
what really made this a sequential move game is说它是贯序博弈是因为 -
that Player II knew what Player I had done在参与人II行动之前 -
before he got to make his move.他知道参与人I采取了什么行动 -
It isn't the timing per se that matters,问题的关键不在于行动的时间 -
it's going to turn out it's the fact that实际上关键在于 -
Player II could observe Player I's choice参与人II在自己做出选择前 -
before having to make his or her choice that matters.可以知道参与人I做出什么样的选择 -
Notice, just while we're on the subject,注意一下 我们这么说的意思是