“You don't know you're beautiful / That's what makes you beautiful . . .” Anyone with a radio is familiar with these lyrics, and many grasp their irony. The girl in the song has an appeal precisely because she doesn't know her appeal. Taking the lyrics literally means that if the girl listens to the song, believes its lyrics, and realizes she's beautiful, she would then cease to be lovely. Smirking aside, that concept probes at a deeper truth. . .