I was escorting my son to school. When I hugged him at the school yard and was about to say “have a nice day” I said to him: “good night”. My mind was already somewhere else, and the situation was similar enough to the one in the evening when the child was going to bed: we would part for a while and I could concentrate on my own work. From his viewpoint, though, there was a huge different between the start of a school day and going to bed.
Everyday Anomalies 