How does the playwright use dialogue to develop the message in this passage? Beneatha’s use of sarcasm shows how people can unintentionally hurt those they care about. Lindner's good manners and polite words show that segregation can be subtle and indirect. The rapid pace of Beneatha, Walter, and Ruth's dialogue shows that direct confrontation is the best way to resolve differences. Walter's questions and Ruth's exclamation develop the message that communication breakdowns are often the fault of both parties.