What is the importance of Julian Wolkenstein's, Symmetrical Portraits, in the essay collection, Unreality of Memory?

Gabbert references the photo series Symmetrical Portraits in her essay "Vanity Project." The series was done by photographer Julian Wolkenstein. In the series, Wolkenstein presents the right- and left-symmetrical sides of his subjects' faces side by side. The left versions present more affable and pleasant individuals, while the right present more dour and fatigued individuals. Gabbert references the series in her conversation about the individual's relationship with her appearance, as a reference point to reality.