Daniela, a recovering alcoholic, is interested in dating Stephanie, who is a librarian at an elementary school. Daniela runs into Stephanie at a party and observes her for a while; she seems very pretty and nice. Daniela's friend asks if she is sure she wants to date Stephanie, given that Stephanie drank beer all night at the party. Try as she might, Daniela can't remember Stephanie drinking beer; she is certain she was drinking soda all night. What might explain this?