The poem does use informal language. Here's why:
* Dialogue: The poem heavily relies on dialogue, which is inherently informal. The language used by the scavengers is straightforward and ungrammatical at times, reflecting their working-class background.
* Slang: The poem uses slang words and phrases like "bummed," "joint," and "chick."
* Directness: The poem is direct and unpretentious in its language. It doesn't use complex metaphors or elaborate imagery, which could be seen as formal poetic techniques.
However, while informal, the language is not crude or offensive. It is effective in capturing the contrasting realities and perspectives of the two groups of people in the poem. The poem uses informal language to create a sense of realism and immediacy, which contributes to its powerful message about social inequality.
Let me know if you have any other questions about the poem!