
46 Decision Based Design
ties are allowed (Figure3.1). This rule ensures transitivity in the preferences
of outcomes. For example, if a decision maker has ve outcomes to consider,
A,B, C, D, and E, one of the ways he or she can rank them is A ≻ B ≡ C ≻ D ≻ E.
The sign ≻ signies “is preferred to” and the sign≡signies “is equally valu-
able as.” So, for the example mentioned, the decision maker prefers option
Ato B, is indifferent between B and C, prefers C to D and D to E. This auto-
matically implies that A is preferred to C, D, and E (transitivity). Transitivity
will also imply that B and C are preferred to E.
3.2.1.1.1 Overcoming Resist ...