这样做的意义在于你不必，从头到尾去考虑要不要，把我所说的都记录下来。

And the point of this is so that you don't come to class heads down the whole time thinking everything I say is absolutely worthy of being written down.

youdao

我们（从头到尾）把上次会议记录看了一遍。

We read ( through) the minutes of the last meeting.

youdao

And the point of this is so that you don't come to class heads down the whole time thinking everything I say is absolutely worthy of being written down.

这样做的意义在于你不必,从头到尾去考虑要不要,把我所说的都记录下来。

哈佛公开课 - 计算机科学课程节选