I think you are missing the point how looking at a cell-phone is impolite. It's like this: you tell a friend about this cool new software but he thinks what do

I think you are missing the point how looking at a cell-phone is impolite. It's like this: you tell a friend about this cool new software but he thinks what do eat. Someone else tries to explain something to you but you figure how to solve that software bug. When I was 16 or so, I stopped wearing a watch. Because so often I just looked at this watch, even when time did not matter so much. But this reflex raises your stress level. When I looked more often at the watch I remember people asking me whether I was in a hurry or something. Maybe I'm a bit extreme about that, but the fact is this: more multimedia, more distraction, more stress. Even more when we are talking about push updates.