In "Inherent Vice," Doc reflects on the unique nature of Polaroid photographs, which are distinct for lacking negatives and having a finite lifespan. This fleeting quality of Polaroids captures the essence of moments that are inherently temporary and subject to decay.
As he observes the prints, he realizes they are already showing signs of deterioration, shifting in color and fading. This observation serves as a metaphor for the transient nature of memories and experiences, emphasizing how time inevitably alters and diminishes the clarity of our past.