Red looked up in fright, but the Astronomer said, "I don't think, son, you're being very polite.
The astronomer went on to say  Red was being very impolite in what he was saying.
mnli hypothesis: The astronomer went on to say  Red was being very impolite in what he was saying. premise: Red looked up in fright, but the Astronomer said, "I don't think, son, you're being very polite.