So in a sense it tells you this work of art is of a piece with what you already know; it's familiar in those ways, and you shouldn't be afraid of it.

在某种程度上,这告诉了你这件艺术作品,其实是你早已认识的东西;,你已经通过那些方式了解了它，不用怕它。

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Well, it doesn't get very precise but it has the intuitive concept.

当然这种阐述还不精确,但已经有了直觉的认识

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That's an important observation, and as we get to the part of the course we talk about computational complexity, you'll see that what we really care about is not how efficient the program is on easy problems but how efficient it is on hard problems.

我们已经学习了这门课程的一部分了，我们要开始认识到,计算的复杂度这个概念，你会学习到我们在乎的并不是,算法在简单问题上的工作效率,而是解决复杂问题的效率。

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