Final answer:
The author uses satire to mock man's inability to freely express himself.
Step-by-step explanation:
In this excerpt from 'A Visit from the Goon Squad', the author uses satire to mock man's inability to freely express himself. The author describes a man who has been living underground and has never been part of society's data or technology. By using phrases such as 'a man you knew just by looking', 'forgotten and full of rage', and 'in a way that now registered as pure', the author is satirizing society's reliance on technology and its impact on individuality and self-expression.
Learn more about Satire and self-expression in literature