In Samuel Beckett's works "Molloy," "Malone Dies," and "The Unnamable," the question of which hand is used for personal hygiene serves as a metaphor for deeper existential themes. The query, whether it truly makes a difference, prompts readers to contemplate the absurdities of life and the arbitrary nature of human actions. This seemingly trivial detail highlights the struggle of individuals to find meaning in the mundane rituals of everyday existence.

Beckett delves into the absurdity and futility of human concerns, emphasizing how our preoccupations often mask a greater sense of disconnection and uncertainty. The choice of hand for such a basic function symbolizes the fragmented nature of identity and existence, suggesting that in the grand scheme of life, the differences we cling to may be ultimately insignificant. Through this lens, Beckett invites readers to reflect on the nature of their own lives and the meaning they ascribe to their actions.