When you and I talk, we pay attention to what each other saids, the reponses will be related to the previous statement.
Nice Day. Why yes, it's beautiful today. When someone said a non sequitor, they aren't thinking about you or what you said. They're off in their own little dream world, and their statement reflects what is going on in that dream world. When we stopped for that girl to go to the apartment, I was wondering how long she would be, I think I was double parked and thinking about that--all things related to what was actually happening. Frank T's comment came from ideas he was having in his head which had nothing to do with what was actually happening at the moment or with her. We had been there less than 3 minutes - she was going to a 2nd or 3rd floor apartment.
His idea she was screwing somebody couldn't have realistically occured in that time frame. It didn't have to do with what was going on. It came from his imagination.
When he said it, I related it to what I knew about the girl, she didn't screw around. His idea has nothing to do with what the girl was actually like. His comment came totally from his imagination and had nothing to do with the reality of the situation. He was in La La land.