This illustration is loosely based on this interview i heard for a book called The Shallows. The basic idea behind this book is that the internet is a medium of distractions and we are loosing our ability to think deeply. He claims that the more you practice being in a state of distraction your brain reconfigures its neurons to function that way, thus loosing the ability to focus on one thing for a long period of time. i havent read the book but you can listen to the interview here at npr.com and judge for yourself if hes on to something.