Final answer:
Kurt Vonnegut expands his argument by highlighting the irrationality of mass accusations during the Soviet purges, using personal reflections to emphasize the importance of individual integrity over systemic labels.
Step-by-step explanation:
In Kurt Vonnegut's letter 'I Am Very Real,' the author expands his argument in paragraphs 7 and 8 by demonstrating the absurdity of too easily labeling individuals as guilty without considering the context of the situation. By employing references to historical contexts such as the purges in the Soviet Union, Vonnegut illustrates how people can get caught up in the sweep of events despite their innocence and honorable intentions. The quote provided offers a reflection on the knowledge of a close family member's character, countering the blanket accusations that were a hallmark of totalitarian systems.
Vonnegut's use of this argument serves to challenge the reader's notion of guilt or innocence and encourage a more nuanced view of humanity. This is consistent with his broader thematic concerns about the dangers of dehumanization and conformity within a society. It's a method that effectively appeals to the reader’s emotions, evoking empathy and underscoring the importance of individual integrity amidst systemic injustice.