 If the decision-maker’s preferences are represented by a set of utility functions \(\cU,\) then a number of possible decision rules suggest themselves. All the proposed rules focus on selection of permissible options from a set of alternatives \(\cS,\) rather than an aggregation function or a complete ranking of options (we can always recover the former from the latter, but not vice versa). To understand the first three of these rules, we can imaginatively think of each possible utility function as a “committee member”, and posit a rule for choice based on facts about the opinions of the committee.