  Because it promises to solve two outstanding problems of mental causation, this approach is potentially quite powerful. (For discussion, see Fodor 1991; Burge 1995.) One question to raise here, however, is whether the fact that some behavior can be described broadly makes the intentional mental property of its cause relevant. The undeniable conceptual connections between mental and behavioral descriptions might point to a kind of explanatory relevance, but it’s a further question whether causal connections grounding these explanations involve broad properties. Those motivated by the original epiphenomenalist arguments will worry that narrow, physical properties are really doing all the work here: the apparent relevance of the broad properties is an illusion created by the way we, in describing and explaining behavior, conceptualize both cause and effect (see Owens 1993). This point leads to a fourth, related response to the problem.