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Sheldon needs someone to read through the works he did during his elementary school days, to find out if he has made a scientific breakthrough that was Nobel Prize worthy, since he thinks his time is too important to do the task himself. He eventually hires an attractive Physics grad student named Alex Jensen. When Alex answers Amy's video call to Sheldon, Amy gets shocked to learn that Alex is a girl. Amy and Penny go to Caltech to spy on them. In the cafeteria, it turns out that Alex is flirting with Leonard, much to Amy's relief and Penny's surprise. Penny has to consider that Leonard is attractive to other women. Meanwhile, Howard tells Bernadette that he have a layover in space of an additional 7 - 10 days. He is sick of his time in space and is having bad anxiety attacks that is causing erratic behavior.