Identify What Is Significant. A model should also identify the really significant aspects of public policy. It should direct attention away from irrelevant variables or circumstances and focus on the real causes and significant consequences of public policy. Of course, what is "real," "relevant," or "significant" is to some extent a function of an individual's personal values. But we can all agree that the utility of a concept is related to its ability to identify what it is that is really important about politics.