 But although these challenges are important, and may very well turn out to be right, it is fair to say, first, that it has not yet been established that there is no coherent conception of libertarian free will, and, secondly, that it is, at least, very doubtful that one can establish that there cannot be cases where some evil is logically necessary for a greater good that outweighs it without appealing to some substantive, and probably controversial, moral theory.