Now, a paladin in D&D is bound to neither viewpoint, and most will incorporate elements of both ("extraordinary burdens" arguments, for instance, would argue for utilitarianism, unless it creates an extraordinary burden for the minority chosen to suffer). They are, however, bound in certain ways to advancing either viewpoint. While killing a few evil babies might produce a momentary benefit, ultimately, a policy of doing so creates a hard, terrible world. The greatest good for the greatest number necessitates that those who are punished are actually guilty; a false conviction aimed to "better society" actually steals security from everyone. And the paladin who kills babies extinguishes young, helpless trolls also extinguishes the quality of mercy. These arguments are the basis for things such as civil rights, the concept of a "just war," and the argument of the slippery slope.