 As the reader will recall, Savage takes for granted a set of possible outcomes \(\bO\), and another set of possible states of the world \(\bS\), and defines the set of acts, \(\bF\), as the set of all functions from \(\bS\) to \(\bO\). Moreover, his representation theorem has been interpreted as justifying the claim that a rational person always performs the act in \(\bF\) that maximises expected utility, relative to a probability measure over \(\bS\) and a utility measure over \(\bO\). 