thnik again!

- How was the movie?
- It was OK. But I had seen it before.
- ‘Stand and Deliver’ wasn’t it?
- Yes, about Jaime Escalante’s unbelievable success with his maths students.
- I must see it.
- Yes, you must. But something that happened before the movie began was equally interesting.
- How come?
- I went with my girlfriend Tara and we were supposed to meet her friend Hugo at the cinema.
- Hugo, the plumber.
- He is an apprentice plumber, yes.
- I have always wanted to be a plumber.
- We didn’t find him, so we were searching the rows and files for him. I searched the rows with my eyes from left to right starting at the first row and then the second from left to right, and so on.
- I could never be that systematic.
- Tara did the same thing, but with the files.
- Did any of you find him.
- Yes.
- I am wondering which method is best. Searching by rows or by files?
- We were wondering about the very same thing after the movie!
- Were there more files than rows?
- Yes.
- What did you and Tara find out?
- Not a lot, but Hugo solved the puzzle in no time.
- I have always wanted to work with water.

Problems source:  The Emissary Newsletter’s Puzzle section by Elwyn Berlekamp and Joe P Buhler.

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