Here's why:
* Dark Humor: The story features a tragic and unsettling incident (the accidental death of the protagonist's father), but Greene portrays it with a darkly comedic tone, highlighting the absurdity and irony of the situation.
* Satire: The story satirizes societal norms and expectations, particularly those surrounding class, wealth, and respectability. Greene uses exaggerated characters and situations to expose the hypocrisy and superficiality of these social structures.
* Absurdist Humor: The story's events are often bizarre and illogical, defying conventional expectations and creating a sense of surrealism. The use of an accidental death caused by a falling piano and the protagonist's subsequent struggle with the bizarre nature of the accident contribute to this element.
While Greene is known for his exploration of moral and religious themes, "A Shocking Accident" primarily utilizes the above elements to create a uniquely dark and satirical tone.