  Singer’s proposals have struck many as overly demanding, impracticable, and a significant departure from the demands of ordinary morality. This assessment has generated a number of criticisms, as well as defenses, of demanding principles of beneficence such as the one he proposes. Critics argue that a principle of beneficence that requires persons, governments, and corporations to seriously disrupt their projects and plans in order to benefit the poor and underprivileged exceeds the demands of ordinary moral obligations and has no plausible grounding in normative moral theory about obligations. They argue that the line between the obligatory and the supererogatory has been unjustifiably erased by such a principle. In effect, the claim is that Singer’s aspirational moral ideal is an attempt to redraw established lines in morality that distinguish between moral obligation and supererogatory moral ideals.