While I believe that showing and not telling may work in some situations, it is not a rule you should follow undeniably. It's not a rule you can apply to every situation, but only very few, and therefore it is not good advice to follow.
"When you are using a POV character, the single most important thing that you must tell the reader is the full purpose of what the character is doing, as soon as the character knows it himself. If you do not, you are cheating, and the audience gets less and less patient with you, until they lose interest because you are not telling them the most important information that people come to stories -- especially fiction -- to receive!"
-Orson Scott Card
From Orson Scott Card's Hatrack River writing lessons section:http://www.hatrack.com/writingclass/lesson...0-08-02-4.shtml