 The underlying assumption of A4R is that it is easier to reach agreement about a decision-procedure for how to go forward in the face of substantive moral disagreements about the appropriate distribution of health resources than it is to resolve the underlying substantive disagreements themselves (Daniels 2000; Daniels and Sabin 1997; Daniels and Sabin 2008). A4R articulates four conditions that, if satisfied, render a decision-procedure legitimate – even when individuals disagree about fundamental questions about values or justice or the decision reached by the procedure. These four conditions are as follows: