Before revision: For instance, a man knows that another man is in a room in the building because he heard him, but in answer to a question, says, "I have not seen him," thereby falsely implying that he does not know .
After revision: For instance, a man knows that another man is in a room in the building because he heard him, but in answer to a question, says, "I have not seen him," thereby avoiding lying and also avoiding making a revelation .