Teaching: My brother Behnam teaches GNU/Linux and various software that usually come with it, specially server-related applications. A week ago, after he had talked about an hour about how yum works, how to use it, and how to install a certain piece of software (let's call it FreeFoo) that the students were being taught about (on Fedora and with yum), a student asked a question:

Student: I was wondering if you would please give us a copy of the FreeFoo software you just installed on the computer?

Behnam: But I don’t have anything apart from the OS installation CDs, of which you have copies. The application yum does all the rest.

Student: But you just installed it! You should have a CD somewhere.

Behnam: It’s installed off the Internet, as I told you.

And then Behnam explains again for half an hour how yum works.

Student: [not believing him] Ah, still, would you give us a copy if you have one on you?