 The prospects for a successful abstract version of the argument from evil would seem, therefore, rather problematic.  It is conceivable, of course, that the correct moral principles entail that there cannot be any evils whose actuality or possibility makes for a better world. But to attempt to set out a version of the argument from evil that requires a defense of that thesis is certainly to swim upstream.  A much more promising approach, surely, is to focus, instead, simply upon those evils that are thought, by the vast majority of people, to pose at least a prima facie problem for the rationality of belief in an omnipotent, omniscient, and morally perfect person.