Charles Olson's metaphorical expression strikes a unique chord as it juxtaposes the mundane experience of losing appetite with the cosmic beauty of the Crab Nebula. The imagery of 'this swirl' invoking something vast and celestial suggests a stretching of the mind from the immediate physical state to the expansive universe. It resonates as a commentary on how, even when we feel depleted or less driven in the present moment, there is solace and significance in contemplating something greater than ourselves. The Crab Nebula, being the remnants of an exploded star, could symbolize transformation, the cycle of decay and rebirth, or the fleeting nature of existence. This lends depth to the phrase "running out of appetite," which might represent more than mere hunger—it could imply a fading enthusiasm, passion, or zest in life's pursuits.

Olson's line encourages a pause, urging the reader to find contentment "for now" in a fragment of the grand, the swirling cosmic dance. It highlights an acceptance of the current state—as imperfect or limited as it may be—and suggests a form of mindfulness or surrender. This momentary cessation of craving is harmonized by the meditation on something vast and beautiful, demonstrating how small moments or observations can provide unexpected nourishment. Poetically, it challenges us to find meaning in the ephemeral and the universal, allowing the cosmos itself to be a metaphor for internal states and the comforting rhythms that help us endure until appetite returns.