It’s part of our present day life that we are forced to “multitask”. Skip the technical definition because in today’s street talk, it simply means your ability to do several things at the same time. You see people read mails while grabbing a quick lunch. Dashing off messages while attending meetings and catching up with mails while someone else is talking to them in their places of work. I have even seen a young lady walk through heavy traffic while messaging text on her cell phone- entirely oblivious to the chaos around her.
You might argue that the sheer pace of life compels us to try to do several things at the same time. There’s some truth in what you say. However, when we do more than one thing at any time, something is bound to give. We lose focus.