If a non-physical event causes a change in the physical world

 Modern physics is founded on principles that assert the conservation of various physical quantities.

So,  If a non-physical event causes a change in the physical world—dualists are repeatedly asked—does that not imply that physical quantities like energy or momentum fail to be conserved in any physically closed causal system in which that change occurs? And does that not imply that every voluntary movement of a human body involves a violation of the laws of physics—that is to say, a miracle