Unaware boys

I would like to ask whether the boys on the tram today see the lady who was trying to reach the tram door at the station. She was too slow on her wheelchair, she touch the button for opening the sliding door too late. But the boys could have just press the one to get out, and she would have managed.
I don't think they saw her. They were probably not mean, just distracted. They were looking at the newest mobile phone one of them had, and playing a game. They completely forgot about the rest of the world.

When I see people so concentrated in what they are doing that they lose awareness of the surrounding, I am afraid that at some point everyone will be so busy with himself or the own activities that the other people will just disappear. It sounds like a science fiction scenario, but it feels very real when you walk through people talking to themselves, i.e. to their mobile phones, and bumping you because they did not see you; or people not turning around to check a strange noise because they are listening to music with their headphones; and finally, people sitting at the same table in a restaurant not talking to each other, busy pressing screens or keys on their gadgets.