Environment-Dependent Content and the Virtues of Causal Explanation

One line of objection to Externalism or Anti-Individualism is that, if it were true, causal explanations citing the content of mental states or events would be redundant. Another is that individuation by intentional properties would fail to be individuation by causal powers. My aim in the present paper is to answer these charges. But first a few terminological matters to get the charges into focus. We need a formulation of Externalism or Anti-Individualism. Let us say that: