In a recent USA Today article, texting and music listening while driving and walking are leading to an increase in the death of pedestrians. People are still talking on the phone and texting while driving, despite the statistics that prove it can be deadly and despite it being against the law.
But now, we have new statistics that show the same result -- injury and death -- arises from just walking and texting or listening to music and being in "another zone." All of which confirms that multi-tasking is a misnomer. We can do one thing at a time, not many different things at the same time.
Those who reach the pinnacle of success are able to do many things ... but focus on one thing at a time. There just ain't no such thing as multi-tasking.