I went for a walk with a friend today. As I pulled a tissue out of my coat pocket, a folded piece of paper fell out. My friend said "oh, you've dropped something" and picked it up. She then proceeded to open up the piece of paper. I asked her what she was doing and she said "I'm just seeing what it is". It was an old shopping list so nothing important but I was really shocked that she thought it was OK to open it. If it had been the other way round, I would have picked it up and handed it straight back to her, I would never dream of opening it. I just thought it was strange. What do you think?