One day after the plane has reached cruising altitude, I took out my iPhone and started playing game. The passenger sitting near the aisle apparently felt uncomfortable. When I paused my game to get refreshments from the stewardess, that passenger told me that my mobile phone was endangering the plane. I told her that my phone was on airplane mode and she did not understand what airplane mode was, so I said cellular connection was off. She still looked uncomfortable. I did not want to explain more, so at the end, I went back to my game.
I understand her feelings because I have been in that situation myself. I see something that is not right (according to my rules), and I have the urge to tell other people how wrong they are. My intention is to educate them so that they will not make that mistake again in the future. For example, last week in the airport toilet, I saw a lady cutting the queue line and went straight to the door of a cubicle. My rule is to wait in line, until any door is open and people can go, but some people believe that the right way to do it is to queue in front of individual door. I told her to queue behind me, but she refused and kept standing in front of the door. She told me that she specifically wanted to wait for the squatting toilet instead of the sitting one. I said nothing more because I did not want to argue. I still feel rather annoyed though.
My current approach: based on a good intention, I will inform the other person about the proper way (once again, according to my rules) to do things, but I will not let it bother me further if they still choose to do it their way.
What will you do in similar situation?