A Side Effect of Digital Devices: Brain Fatigue
nytimes.com
nytimes.com
"...it is upon fashion, cars, and gadgets, upon news and the advertising for which news exists, that our present industrial and economic system depends for its proper functioning. For, as ex-President Hoover pointed out not long ago, this system cannot work unless the demand for non-necessaries is not merely kept up, but continually expanded; and of course it cannot be kept up and expanded except by incessant appeals to greed, competitiveness, and love of aimless stimulation. Men have always been prey to distractions, which are the original sin of the mind; but never before today has an attempt been made to organize and exploit distractions, to make of them, because of their economic importance, the core and vital center of human life, to idealize them as the highest manifestations of mental activity. Ours is an age of systematized irrelevancies, and the imbecile within us has become one of the Titans, upon whose shoulders rests the weight of the social and economic system. Recollectedness, or the overcoming of distractions, has never been more necessary than now; it has also, we may guess, never been more difficult."
[Further reading](http://books.google.com/books?id=dt8TBNyJpEkC&pg=PA129...)
I don't know if I buy that line of reasoning. Distractions only distract in context, and I believe if your goals are firm 'distractions' hold no appeal. That is, distractions only distract is I'd we desire or care about them, in which case they're actually our true objectives, regardless of how unflattering that may be to accept. But I could be wrong!
How I wish that were true!
Conversely, a good workout or a walk in the park is exhilirating.
It would make sense that if some people could practice their craft more (without hitting the wall of diminishing returns) they would be better at what they do.