In "Shopgirl," Steve Martin explores the contrasting perceptions of two characters, highlighting their differing levels of awareness. One character is focused solely on his immediate environment, lacking deeper insight or connection to what is occurring beyond his immediate view. This limited perspective shapes his interactions and relationships, suggesting a sense of detachment from the broader emotional landscape around him.

In contrast, the other character possesses a heightened sensitivity to her surroundings. She is acutely aware of every nuance and sensation that affects her delicate emotional state. This intense awareness allows her to engage with her experiences on a deeper level, reflecting the complexities of emotion and connection. Through these characters, Martin delves into themes of perception, emotional depth, and the intricacies of human relationships.