“If you take a course on writing or attend a writer’s conference, you’ll likely hear the phrase, “Show, don’t tell.” In other words, “show” your readers what is happening, don’t just tell them.
Don’t tell readers what you did; describe doing it. One of the reasons we tend to tell rather than show is that it’s easier and faster. Showing how to do something requires time and effort. In teaching, it’s easier to tell students what’s wrong with what they did than to show them how to do it right. The latter, however, is more effective.”
-found on Our Daily Bread [www.odb.org]