that a decision maker is unaware of an event if and only if her choices reveal that the event is "null" and the negation of … the event is "null". Moreover, I characterize "impersonal" expected utility that is behaviorally indistinguishable from …

observe that a decision maker is unaware of an event if and only if her choices reveal that the event is ``null'' and the … negation of the event is ``null''. Moreover, we characterize ``impersonal'' expected utility that is behaviorally …

that a decision maker is unaware of an event if and only if her choices reveal that the event is “null” and the negation of … the event is “null”. Moreover, we characterize “impersonal” expected utility that is behaviorally indistinguishable from …