In recent weeks I have been bumped into by people reading emails/texts, kindles, and newspapers and on one occasion by someone finishing off their sudoku puzzle! Now that takes concentration as the those puzzles can be really tricky!
I can understand people walking and reading a book/kindle - I've lost count of the number of times that I've got to my stop just as I've got to a good bit or am only a few pages from the end. But emails? Especially when first thing in the morning they're probably work ones.
I have to confess that I keep this rule only sporadically, mainly when I need to send a text or email before I forget and when I can see its a really good email I've received with a good piece of gossip. I don't tend to carry on reading my book though as I'm worried about what will happen when I get to the top of the escalator or the bottom of the stairs! I can see myself ending up in casualty at worst or at best having an embarrassing wardrobe moment!
So hats off to all who manage it without accident. Keep bumping into people - one day someone will respond.