It may be obvious to you, the developer or the computer scientist or the engineer, well, obviously, I just click, here, here, here, here, here, here and voila, out comes my ticket, but most people don't have an interest in that process and a lot of people, this person in particular, just don't necessarily understand that process.

这对于开发人员，或者计算机专家或者工程师,可能是显而易见的，呃，显然地，我只要点击这里，这里，这里，这里，这里，瞧，我的票出来了，但是大多数人没有兴致,来做这些步骤，很多的人，特别是这个人，不见得懂得这些步骤。

哈佛公开课 - 计算机科学课程节选

I'm reminded of the confirmation screen here and that's not too bad, then we put in the card and we click confirm and then finally we see the swap Then finally literally nine steps later the ticket comes out of the machine and then, frankly, had to go through the process of where to put the ticket in the machines.

这里出现了确认画面,那还不是太坏，然后我们把卡插进去,点击确认，然后我们看到了那个,函数。，swap，function。,【笑声】然后最终经过9个步骤,票从机器中出来了，然后，需要找出从哪里,把票放到机器中去。

哈佛公开课 - 计算机科学课程节选