Funny thing about that book of Juan's.  Every evening Juan tried to read a little bit of that book.  The routine went like this:

1. Rummage around through all three of his bags containing clothes, etc looking for his small flashlight. 
2. Rummage around through the remaining bags looking for the book.
3. Ask me if he could borrow my flashlight.
4. By now Juan was too tired to read, so he would give up and go to sleep.

By the way -  the book was a physics book by Richard Feynman. 

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