It's true! Systems thinking causal loop diagrams and system dynamics stock & flow diagrams represent "theories" of the system. They don't look too practical. And we don't have all that much respect for theory. After all, when we're in a hurry, someone will say, "That's too theoretical. Let's get practical. Let's just get on with it."
Indeed, such impatience can be justified. Many organizations have created complex diagrams, but they haven't known what to do with them. That is, how to use them as a basis for action. Here's how.
For an explanation, see the two-page paper on Causal Loops to Action (288K)