1. Can you see anything in an empty box? No, I can’t see anything in an empty box. I can see nothing in an empty box. Why not? Because there is nothing in an empty box. There isn’t anything in an empty box. What is an empty box? An empty box is a box that has nothing in it. An empty box is a box without anything in it. An empty room is a room without anything in it. 2. Can everyone see? No, not everyone can see. Some people are blind. Blind people can’t see. They can’t see anything; they can see nothing. 3. Can everyone hear? No, not everyone can hear. Some people are deaf. People who are quite deaf can’t hear anything; they can hear nothing. 4. Can we see anything? No, we can’t see anything. We cannot see the air. Nobody can see the air. 5. We can’t walk without legs and feet. People without legs and feet can’t walk. They can’t walk anywhere. They can walk nowhere.