 Diminishing marginal value and global sensitivity are captured, respectively, by the utility function and the risk function. Furthermore, the Allais preferences can be accommodated by a convex risk function (Segal 1987, Prelec 1998, Buchak 2013; but see Thoma &amp; Weisberg 2017). Thus, REU maximization holds that decision-makers have the Allais preferences because they care more about what happens in worse scenarios than better scenarios, or are more concerned with the minimum value than potential gains above the minimum.