Something incredibly bizarre has clearly happened—and yet, everyone in Percy’s life insists that it didn’t. This makes Percy feel even more like he doesn’t fit in at Yancy Academy or in the real world. Especially when Grover, Percy’s best friend, doesn’t validate Percy’s experience, it makes Percy feel even more alone and abnormal. As far as Percy is concerned, he’s going crazy—and given that he’s already struggling in school, it’s likely that this self-doubt will have even further negative effects on his ability to function at Yancy.