 This psychological model helps explain how you can come to know the correct analysis of your term ‘water’ by noting which properties you treat as “obvious and central” when filling in a 2D matrix like the one above (Jackson 1998a, 31). The 2D framework prompts you to consider possible cases in two different ways–as actual or as counterfactual. This allows you to know whether the content of your term varies depending on what your actual environment is like (e.g. ‘water’) or whether it is stable (e.g. ‘bachelor’). Moreover, careful attention to your reactions to these suppositions will allow you to make explicit which superficial properties implicitly guide your application of the term. For instance, you may discover that your implicit criterion for applying ‘water’ is that water \(=_{df}\) the actual chemical kind in your environment that is a clear, potable, odorless liquid that falls as rain and fills lakes and streams. Alternatively, your use of the term ‘water’ may be guided by the types of causal relations invoked in causal theories of reference: water \(=_{df}\) the actual natural kind that has been the dominant cause of your community’s past use of the term ‘water’. Indeed, Jackson suggests that standard causal theories of reference are based on this method of conceptual analysis (1998a, 37–41). [See the entry on  causal theories of mental content.]