How to get banned from the library.

- I need that article by Knuth and somebody else. You should have it on reserve.
- What article?
- I don't remember what it's called.
- Uh...
- It's the one where he has a nice parallel summation proof of Pascal's second binomial identity.
- This means nothing to me.
- It's by Knuth and some other guy... but mostly by Knuth. You have it on reserve.
- When was it put on reserve?
- Some time between 2000 and ... now.
- You are kidding?
- Just go look, it's going to be under Knuth.
[Walks away. Symbolic shuffling of papers.]
- Well?
- We don't have it.
- You don't have ANY articles by Knuth?
- No.
- That's impossible! This is the engineering library! That's how I know you are lying to me! You could've at least brought me some article by Knuth! Just to show me that you are trying!
- You are going to have to leave now.