  But this principle too has implications that in some cases seem counterintuitive. One is that, despite the tilt in favour of the neediest, there are going to be cases in which it advocates helping a large number of less needy people instead. If enough people can have minor headaches relieved at the cost of denying someone a kidney transplant, the principle will advocate doing that. Crisp responds to this problem by introducing a needs threshold such that those with relatively trivial needs are excluded at the first stage of implementation and only come into consideration if there are surplus resources after the weighted priority principle is applied to those above the threshold. But, as he himself puts it, ‘where the threshold falls, of course, is the key question any proponent of this view must answer’ (Crisp 2002, 140).