"Yup," she said.
"What about?" he said.
"I forget," she said. "Something real sad on television."
"What was it?" he said.
"It's all kind of mixed up in my mind," said Hazel.
"Forget sad things," said George.
"I always do," said Hazel.
How does this interaction between George and Hazel develop Kurt Vonnegut's social criticism?