إفادة المخاطب إمّا الحكم
To give the addressee the judgment itself.
If the addressee does not know whether a relation holds, and the speaker informs them that it does or does not, the report provides fāʾidat al-khabar, the primary benefit of a report. For example, a student does not know whether the teacher has arrived; «حَضَرَ الأُسْتَاذُ» supplies that judgment.
What is new is not merely the meanings of the words but the reported relation: whether an event took place or a property applies to its subject.