We live in stories. We can write down or tell a story. A story is basically relating an experience we have had. We can then convert this to variables and relationships. When we see the system of the story we can see many alternative stories.
For an example of a story Marc wrote about a sailing experience he had please see Sailing story Variables
See Stories and Systems See Story of Stories
We can also convert any article or paper into a CLD. When we do this we see what I call the hidden variables = the variables which have been (un)intentionally missed from the document. It allows us to craft better questions to develop our understanding.