 This first problem is that, if (as stipulated) the holdings of individuals under P1 were just and if (as stipulated) interactions that converted P1 into P2 were all just, it is difficult to see how P2 can become infected with injustice. Of course, P2 (almost certainly) must be judged to be unjust if one continues to assess the justice of distributions on the basis of the adopted patterned principle. But it seems reasonable to demand an explanation of how that asserted injustice could have entered P2 given the justice of P1 and of the processes through which P2 emerges from P1.