Everyday, I see people in cafes, on the street, in buses or trains, busy with their cellphones or tablets, or jacked into their earphones, zoned out and oblivious to the world around them.
If you are taken by surprise, it doesn’t matter how well-armed you are, how much you’ve trained. As one of my martial arts masters said, “Surprise turns a black belt into a white belt.”
So put the f*cking tablet away, it won’t kill you to be offline for a while. When in public, keep your head up, be alert and aware.