Laurel: Modem moral theories must be jettisoned, or at least greatly reworked, because they fail to provide guidance in extreme cases, which are precisely the times when people most need guidance  Miriam: A moral theory, like an overcoat, can be quite useful even if it is not useful in every possible situation
Being useful in a wide variety of common circumstances is all we need from a moral theory
a moral theory's adequacy depends on its ability to provide guidance in extreme cases