 Thirdly, there is the manipulability worry mentioned before with respect to agent-centered versions of deontology. To the extent potential conflict is eliminated by resort to the Doctrine of Double Effect, the Doctrine of Doing and Allowing, and so forth (and it is not clear to what extent patient-centered versions rely on these doctrines and distinctions to mitigate potential conflict), then a potential for “avoision” is opened up. Such avoision is the manipulation of means (using omissions, foresight, risk, allowings, aidings, acceleratings, redirectings, etc.) to achieve permissibly what otherwise deontological morality would forbid (see Katz 1996). Avoision is an undesirable feature of any ethical system that allows such strategic manipulation of its doctrines.