Abstract
This article aims to defend the thesis—originally defended by Alan Donagan but rejected by Philippa Foot and most others—that the doing/allowing distinction is based upon the difference between acting and failing to act. The paper restricts its focus to the second aspect of this thesis: that every allowing is most fundamentally a failure to act. Foot rejects the thesis because of cases of ‘enabling harm’—such as removing a respirator—in which the agent allows some harm by way of doing something. The troubling aspect of these cases, however, disappears when two points are better understood. First, an independent sequence must be understood in relation to the agent's own actions. Second, sometimes an agent has ongoing actions, such as the use of a respirator.