 Now obviously the inconsistency in the first argument can be avoided if one denies either PC or PD. And the inconsistency in the second argument can be averted if one gives up either the principle that ‘ought’ implies ‘can’ or the agglomeration principle. There is, of course, another way to avoid these inconsistencies: deny the possibility of genuine moral dilemmas. It is fair to say that much of the debate concerning moral dilemmas in the last sixty years has been about how to avoid the inconsistencies generated by the two arguments above.