In the narrative, the protagonist has spent an excessive amount of time working on a wall that ultimately serves no meaningful purpose. The effort seems baffling, perhaps even frustrating, as it leads to nowhere and blocks nothing. This solitary task seems to connect him to his family's past, where craftsmanship was valued, yet he recognizes that the skill has faded over time. His connection to the wall stems from a deeper appreciation for activities that require little thought, akin to fishing, which offers him a form of distraction.

Gristhorpe's reflections highlight a theme of seeking solace in seemingly pointless tasks amidst a world dominated by rigid functionality and authoritarianism. In such a climate, he believes that engaging in activities without a clear objective can provide a necessary release. This sentiment sheds light on the human need for moments of leisure and creativity, even if they appear trivial in the grand scheme of life. By embracing these mindless passions, he finds small, personal refuge in a structured society.