We consider a single object allocation problem with multidimensional signals and interdependent valuations. When agents' signals are statistically independent, Jehiel and Moldovanu [Efficient design with interdependent valuations, Econometrica, 69(5):1237-1259, 2001] show that efficient and...

The paper proposes a choice-theoretic de nition of an unforeseen event and a model of behavior that accommodates such events. The analysis presumes an individual who is aware of their unawareness, which explains why all un- foreseen events in this paper are non-null. Relative to existing work,...