 All of these last five distinctions have been suggested to be part and parcel of another centuries-old Catholic doctrine, that of the doctrine of doing and allowing (see the entry on  doing vs. allowing harm)  (Moore 2008; Kamm 1994; Foot 1967; Quinn 1989). According to this doctrine, one may not cause death, for that would be a killing, a “doing;” but one may fail to prevent death, allow (in the narrow sense) death to occur, enable another to cause death, redirect a life-threatening item from many to one, or accelerate a death about to happen anyway, if good enough consequences are in the offing. As with the Doctrine of Double Effect, how plausible one finds these applications of the doctrine of doing and allowing will determine how plausible one finds this cause-based view of human agency.