The findings Bergen describes also suggest the reason writers are continually encouraged to ‘show not tell’. As C.S. Lewis implored a young writer in 1956, โinstead of telling us a thing was โterribleโ, describe it so that we’ll be terrified. Don’t say it was โdelightfulโ; make us say “delightfulโ when we’ve read the description. The abstract information contained in adjectives such as ‘terrible’ and ‘delightful is thin gruel for the model-building brain. In order to experience a character’s terror or delight or rage or panic or sorrow, it has to make a model of it. By building its model of the scene, in all its vivid and specific detail, it experiences what’s happening on the page almost as if it’s actually happening. Only that way will the scene truly rouse our emotions.
Excerpt from: The Science of Storytelling by Will Storr