 Two possible illustrations are discussed in Woodward (2016). The field equations of General Relativity describe a lawful or nomological relationship between the stress energy tensor and the spacetime metric. “Setting” the former to different values (by specifying initial and boundary conditions) one may calculate the associated different values of the latter. One may doubt, however, that it is appropriate to think of the field equations as describing a causal relationship between the stress-energy tensor and the metric. It is arguable that a possibility constrained interventionist account supports this judgment: specification of the stress energy  tensor requires reference to the metric in such a way that interventions on the former with respect to the latter will violate the conditions  M1–M4  for an intervention. One might conclude on these grounds that although there is a relation of nomic dependence between the state of the stress energy tensor and the metric, this relation is not causal. Employment of a setting conception of intervention seems to realize the opposite conclusion.