 In response, Davidson notes that while Anomalous Monism rejects the possibility of strict laws in which mental predicates can figure, it allows for ceteris paribus psychological and psychophysical laws (Davidson 1993, 9–12). His point appears to be that if backing by law is sufficient for explanatory relevance, then mental properties are explanatorily relevant. (Davidson and his critics often slide between the issues of causal and explanatory relevance, but the latter issue is clearly what is at stake given Davidson’s views about causal efficacy and properties.) Second, Davidson appeals to the supervenience of mental properties on physical properties in order to ground the explanatory role of mental properties. Davidson says that