The protagonist reflects on his life as a continuous movement through history, perceiving his existence as a predictable point on a wave. He feels trapped by the known aspects of his past and the anticipated nature of his future, creating a sense of monotony and lack of excitement. This perspective signifies a life that is constrained and defined by historical momentum.
However, the introduction of Jessica symbolizes a transformative moment, akin to a wave crashing onto the shore. She represents unpredictability and the potential for change, suggesting that there is more to life than merely progressing through time. With her, the protagonist encounters the possibility of new experiences and vitality, breaking free from the confines of his previous existence.