You can interact with a refrigerator: open the door and the light inside turns on. Close the door and the little light goes off. But how many people do you see standing in front of their refrigerators, opening and closing the doors, laughing?
You can interact with a refrigerator: open the door and the light inside turns on. Close the door and the little light goes off. But how many people do you see standing in front of their refrigerators, opening and closing the doors, laughing?