It’s pretty easy to see how at least some stories, for example, convey clear meanings or morals. Just think about a parable like the prodigal son or a nursery tale about “crying wolf.” Stories like these are reduced down to the bare elements, giving us just enough detail to lead us to their main points, and because they are relatively easy to understand and tend to stick in our memories, they’re often used in some kinds of education.
This is a clear example of response to a rhetorical situation.