Argument for Argument's Sake

Kyle's been spending more time at home during the day, and he's been surprised by how much Paul and Erica can argue and fuss. (I guess he didn't really believe me when I told him.) One morning, we were all at the table eating when I actually focused on what the argument was about. Then I told Kyle, "These two, who do not even know their numbers, are watching the face clock and arguing about what time it is." Talk about arguing for argument's sake. Of course, I feel that I must also say that most of the time, Paul and Erica enjoy each other and are good friends.