Everyone is busy. Everyone is doing many different things, sometimes doing them at the same time! I see school children in restaurants doing homework, texting on their phones, eating and talking to their friends all at the same time. How can you really focus on anything deeply if you are doing something else at the same time?
I often find myself multitasking and when I do I remind myself that if I really want to get something done well, I need to do one thing at a time.