The law of the phone.

Here’s the way the phone works at my library:

A) If you are at the desk alone and no one has had a question all day, as soon as someone steps up to the desk with a question, the phone will ring.

B) If the phone hasn’t rung in hours, as soon as you walk to the other side of the library, it will ring.

C) If you are away from the desk and hear a phone ring that you think might be your phone and you run across the library to answer it, it will not be your phone after all.

D) If you are on one line, the circulation staff will repeatedly transfer calls to you.