So for each student the tutor builds a model of that Student's current state what the computer thinks they Know and doesn't know, and tries to present the student options that best meet what the tutor thinks are the student's need at that moment.

因此辅导系统会给每个学生,创建一个模型记录他们当前的学习状态,判断他们已经掌握和还不了解的知识,然后给出此时导师认为,最符合他们需要的选择。

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And as I followed many of the students after they graduate, whether the students who work with me here as undergrads or students who I tutored, when I followed the path,it wasn't just empty words.

据我了解，很多学生毕业后，无论是与我一起工作,还是我辅导的学生，当我了解他们的前路，并不是些空话。

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