 There are deep metaphysical issues at stake here, then: one might view the SEF approach as offering a more sophisticated variant of Lewis’s approach that shares the reductionist aspirations of that approach. Or one might – especially if one is sceptical about the prospects for those reductionist aspirations – take the SEF approach in anti-reductionist spirit, viewing it not as a way of defining causation in non-causal terms but rather as a way of extracting useful and sophisticated causal information from an inherently causal model of a given complex situation.